57642355685 has 16 divisors (see below), whose sum is σ = 75219154416. Its totient is φ = 42228292608.

The previous prime is 57642355669. The next prime is 57642355733. The reversal of 57642355685 is 58655324675.

It can be written as a sum of positive squares in 8 ways, for example, as 11385530209 + 46256825476 = 106703^2 + 215074^2 .

It is a cyclic number.

It is not a de Polignac number, because 57642355685 - 2⁴ = 57642355669 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 57642355685.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9160982 + ... + 9167271.

It is an arithmetic number, because the mean of its divisors is an integer number (4701197151).

Almost surely, 2^57642355685 is an apocalyptic number.

It is an amenable number.

57642355685 is a deficient number, since it is larger than the sum of its proper divisors (17576798731).

57642355685 is a wasteful number, since it uses less digits than its factorization.

57642355685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18328312.

The product of its digits is 30240000, while the sum is 56.

The spelling of 57642355685 in words is "fifty-seven billion, six hundred forty-two million, three hundred fifty-five thousand, six hundred eighty-five".