55768598656 has 16 divisors (see below), whose sum is σ = 111101505390. Its totient is φ = 27884299264.

The previous prime is 55768598647. The next prime is 55768598671. The reversal of 55768598656 is 65689586755.

It can be written as a sum of positive squares in only one way, i.e., 46362702400 + 9405896256 = 215320^2 + 96984^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×55768598656² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217845961 + ... + 217846216.

Almost surely, 2^55768598656 is an apocalyptic number.

It is an amenable number.

55768598656 is a deficient number, since it is larger than the sum of its proper divisors (55332906734).

55768598656 is an equidigital number, since it uses as much as digits as its factorization.

55768598656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435692191 (or 435692179 counting only the distinct ones).

The product of its digits is 544320000, while the sum is 70.

The spelling of 55768598656 in words is "fifty-five billion, seven hundred sixty-eight million, five hundred ninety-eight thousand, six hundred fifty-six".