75655566555656 has 16 divisors (see below), whose sum is σ = 142078995839040. Its totient is φ = 37767834331920.

The previous prime is 75655566555623. The next prime is 75655566555661. The reversal of 75655566555656 is 65655566555657.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7493612876 + ... + 7493622971.

It is an arithmetic number, because the mean of its divisors is an integer number (8879937239940).

Almost surely, 2^{75655566555656} is an apocalyptic number.

It is an amenable number.

75655566555656 is a deficient number, since it is larger than the sum of its proper divisors (66423429283384).

75655566555656 is a wasteful number, since it uses less digits than its factorization.

75655566555656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14987236484 (or 14987236480 counting only the distinct ones).

The product of its digits is 21262500000, while the sum is 77.

Subtracting from 75655566555656 its reverse (65655566555657), we obtain a palindrome (9999999999999).

The spelling of 75655566555656 in words is "seventy-five trillion, six hundred fifty-five billion, five hundred sixty-six million, five hundred fifty-five thousand, six hundred fifty-six".