3656126666020 has 48 divisors (see below), whose sum is σ = 7775934566400. Its totient is φ = 1443775132800.

The previous prime is 3656126665999. The next prime is 3656126666047. The reversal of 3656126666020 is 206666216563.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14332146 + ... + 14585014.

It is an arithmetic number, because the mean of its divisors is an integer number (161998636800).

Almost surely, 2^{3656126666020} is an apocalyptic number.

It is an amenable number.

3656126666020 is an abundant number, since it is smaller than the sum of its proper divisors (4119807900380).

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

3656126666020 is a wasteful number, since it uses less digits than its factorization.

3656126666020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262108 (or 262106 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 3656126666020 in words is "three trillion, six hundred fifty-six billion, one hundred twenty-six million, six hundred sixty-six thousand, twenty".