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102457165293 = 32721093212561
BaseRepresentation
bin101111101101011101…
…1000100010111101101
3100210110102020021100200
41133122323010113231
53134313013242133
6115022420344113
710254661351500
oct1373273042755
9323412207320
10102457165293
113a4a744281a
1217a34845039
13987a8c1cc2
144d5d521137
1529e9d03913
hex17daec45ed

102457165293 has 36 divisors (see below), whose sum is σ = 172314235548. Its totient is φ = 58493111040.

The previous prime is 102457165253. The next prime is 102457165333. The reversal of 102457165293 is 392561754201.

102457165293 is a `hidden beast` number, since 1 + 0 + 24 + 571 + 6 + 52 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (102457165253) and next prime (102457165333).

It can be written as a sum of positive squares in 2 ways, for example, as 100792280484 + 1664884809 = 317478^2 + 40803^2 .

It is not a de Polignac number, because 102457165293 - 26 = 102457165229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102457165253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 375733 + ... + 588293.

It is an arithmetic number, because the mean of its divisors is an integer number (4786506543).

Almost surely, 2102457165293 is an apocalyptic number.

It is an amenable number.

102457165293 is a deficient number, since it is larger than the sum of its proper divisors (69857070255).

102457165293 is a wasteful number, since it uses less digits than its factorization.

102457165293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213674 (or 213664 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 102457165293 in words is "one hundred two billion, four hundred fifty-seven million, one hundred sixty-five thousand, two hundred ninety-three".

Divisors: 1 3 7 9 21 49 63 147 441 1093 3279 7651 9837 22953 53557 68859 160671 212561 482013 637683 1487927 1913049 4463781 10415489 13391343 31246467 93739401 232329173 696987519 1626304211 2090962557 4878912633 11384129477 14636737899 34152388431 102457165293