57855835503581 has 2 divisors, whose sum is σ = 57855835503582. Its totient is φ = 57855835503580.

The previous prime is 57855835503577. The next prime is 57855835503593. The reversal of 57855835503581 is 18530553855875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36116313799225 + 21739521704356 = 6009685^2 + 4662566^2 .

It is a cyclic number.

It is not a de Polignac number, because 57855835503581 - 2² = 57855835503577 is a prime.

It is a super-2 number, since 2×57855835503581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57855835503541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28927917751790 + 28927917751791.

It is an arithmetic number, because the mean of its divisors is an integer number (28927917751791).

Almost surely, 2^{57855835503581} is an apocalyptic number.

It is an amenable number.

57855835503581 is a deficient number, since it is larger than the sum of its proper divisors (1).

57855835503581 is an equidigital number, since it uses as much as digits as its factorization.

57855835503581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000000, while the sum is 68.

The spelling of 57855835503581 in words is "fifty-seven trillion, eight hundred fifty-five billion, eight hundred thirty-five million, five hundred three thousand, five hundred eighty-one".