32157655757 has 4 divisors (see below), whose sum is σ = 32373479100. Its totient is φ = 31941832416.

The previous prime is 32157655729. The next prime is 32157655763. The reversal of 32157655757 is 75755675123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20975439241 + 11182216516 = 144829^2 + 105746^2 .

It is a cyclic number.

It is not a de Polignac number, because 32157655757 - 2²⁰ = 32156607181 is a prime.

It is a super-2 number, since 2×32157655757² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32157655699 and 32157655708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32157655157) 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 3 ways as a sum of consecutive naturals, for example, 107911448 + ... + 107911745.

It is an arithmetic number, because the mean of its divisors is an integer number (8093369775).

Almost surely, 2^32157655757 is an apocalyptic number.

It is an amenable number.

32157655757 is a deficient number, since it is larger than the sum of its proper divisors (215823343).

32157655757 is a wasteful number, since it uses less digits than its factorization.

32157655757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215823342.

The product of its digits is 7717500, while the sum is 53.

The spelling of 32157655757 in words is "thirty-two billion, one hundred fifty-seven million, six hundred fifty-five thousand, seven hundred fifty-seven".