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13057167913 = 61214051933
BaseRepresentation
bin11000010100100010…
…01001001000101001
31020200222100212002121
430022101021020221
5203220113333123
65555352231241
7641366044636
oct141221111051
936628325077
1013057167913
1155a0481569
12264499b521
13130119987a
148bc1ab18d
1551649575d
hex30a449229

13057167913 has 4 divisors (see below), whose sum is σ = 13271219908. Its totient is φ = 12843115920.

The previous prime is 13057167863. The next prime is 13057167941. The reversal of 13057167913 is 31976175031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31976175031 = 106130137771.

It can be written as a sum of positive squares in 2 ways, for example, as 5826726889 + 7230441024 = 76333^2 + 85032^2 .

It is a cyclic number.

It is not a de Polignac number, because 13057167913 - 29 = 13057167401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13057167913.

It is not an unprimeable number, because it can be changed into a prime (13057167943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107025906 + ... + 107026027.

It is an arithmetic number, because the mean of its divisors is an integer number (3317804977).

Almost surely, 213057167913 is an apocalyptic number.

It is an amenable number.

13057167913 is a deficient number, since it is larger than the sum of its proper divisors (214051995).

13057167913 is an equidigital number, since it uses as much as digits as its factorization.

13057167913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214051994.

The product of its (nonzero) digits is 119070, while the sum is 43.

The spelling of 13057167913 in words is "thirteen billion, fifty-seven million, one hundred sixty-seven thousand, nine hundred thirteen".

Divisors: 1 61 214051933 13057167913