656155060551656 has 32 divisors (see below), whose sum is σ = 1253511510085800. Its totient is φ = 321885400961280.

The previous prime is 656155060551643. The next prime is 656155060551671.

656155060551656 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 548500615608100 + 107654444943556 = 23420090^2 + 10375666^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65189510 + ... + 74578698.

Almost surely, 2^{656155060551656} is an apocalyptic number.

It is an amenable number.

656155060551656 is a deficient number, since it is larger than the sum of its proper divisors (597356449534144).

656155060551656 is a wasteful number, since it uses less digits than its factorization.

656155060551656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554069 (or 9554065 counting only the distinct ones).

The product of its (nonzero) digits is 121500000, while the sum is 62.

The spelling of 656155060551656 in words is "six hundred fifty-six trillion, one hundred fifty-five billion, sixty million, five hundred fifty-one thousand, six hundred fifty-six".