55787342656 has 14 divisors (see below), whose sum is σ = 110703008210. Its totient is φ = 27893671296.

The previous prime is 55787342641. The next prime is 55787342683. The reversal of 55787342656 is 65624378755.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40016001600 + 15771341056 = 200040^2 + 125584^2 .

It is a super-2 number, since 2×55787342656² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55787342656.

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 as a sum of consecutive naturals, namely, 435838551 + ... + 435838678.

Almost surely, 2^55787342656 is an apocalyptic number.

It is an amenable number.

55787342656 is a deficient number, since it is larger than the sum of its proper divisors (54915665554).

55787342656 is an equidigital number, since it uses as much as digits as its factorization.

55787342656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871677241 (or 871677231 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 58.

The spelling of 55787342656 in words is "fifty-five billion, seven hundred eighty-seven million, three hundred forty-two thousand, six hundred fifty-six".