656056165636 has 6 divisors (see below), whose sum is σ = 1148098289870. Its totient is φ = 328028082816.

The previous prime is 656056165621. The next prime is 656056165637. The reversal of 656056165636 is 636561650656.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 516371588100 + 139684577536 = 718590^2 + 373744^2 .

It is not an unprimeable number, because it can be changed into a prime (656056165637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82007020701 + ... + 82007020708.

Almost surely, 2^656056165636 is an apocalyptic number.

It is an amenable number.

656056165636 is a deficient number, since it is larger than the sum of its proper divisors (492042124234).

656056165636 is a wasteful number, since it uses less digits than its factorization.

656056165636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164014041413 (or 164014041411 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 55.

The spelling of 656056165636 in words is "six hundred fifty-six billion, fifty-six million, one hundred sixty-five thousand, six hundred thirty-six".