656535611406 has 16 divisors (see below), whose sum is σ = 1358349541200. Its totient is φ = 211298817408.

The previous prime is 656535611387. The next prime is 656535611423. The reversal of 656535611406 is 604116535656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1886596411 + ... + 1886596758.

It is an arithmetic number, because the mean of its divisors is an integer number (84896846325).

Almost surely, 2^656535611406 is an apocalyptic number.

656535611406 is an abundant number, since it is smaller than the sum of its proper divisors (701813929794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656535611406 is a wasteful number, since it uses less digits than its factorization.

656535611406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773193203.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 656535611406 in words is "six hundred fifty-six billion, five hundred thirty-five million, six hundred eleven thousand, four hundred six".