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57385655861 = 2512237102203
BaseRepresentation
bin110101011100011100…
…111001111000110101
312111010022020100210112
4311130130321320311
51420011211441421
642210153432405
74101033012062
oct653434717065
9174108210715
1057385655861
1122378785676
12b15640b705
135546c342b1
142ac5599c69
15175ce8c45b
hexd5c739e35

57385655861 has 8 divisors (see below), whose sum is σ = 57640603104. Its totient is φ = 57130918000.

The previous prime is 57385655837. The next prime is 57385655869. The reversal of 57385655861 is 16855658375.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57385655861 - 214 = 57385639477 is a prime.

It is a super-2 number, since 2×573856558612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57385655861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57385655869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510386 + ... + 612588.

It is an arithmetic number, because the mean of its divisors is an integer number (7205075388).

Almost surely, 257385655861 is an apocalyptic number.

It is an amenable number.

57385655861 is a deficient number, since it is larger than the sum of its proper divisors (254947243).

57385655861 is a wasteful number, since it uses less digits than its factorization.

57385655861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104691.

The product of its digits is 30240000, while the sum is 59.

The spelling of 57385655861 in words is "fifty-seven billion, three hundred eighty-five million, six hundred fifty-five thousand, eight hundred sixty-one".

Divisors: 1 251 2237 102203 561487 25652953 228628111 57385655861