56656565546 has 32 divisors (see below), whose sum is σ = 100526400000. Its totient is φ = 23432032512.

The previous prime is 56656565543. The next prime is 56656565569. The reversal of 56656565546 is 64556565665.

It is not an unprimeable number, because it can be changed into a prime (56656565543) by changing a digit.

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, 776690 + ... + 846498.

It is an arithmetic number, because the mean of its divisors is an integer number (3141450000).

Almost surely, 2^56656565546 is an apocalyptic number.

56656565546 is a deficient number, since it is larger than the sum of its proper divisors (43869834454).

56656565546 is a wasteful number, since it uses less digits than its factorization.

56656565546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71846.

The product of its digits is 97200000, while the sum is 59.

The spelling of 56656565546 in words is "fifty-six billion, six hundred fifty-six million, five hundred sixty-five thousand, five hundred forty-six".