56665656201 has 32 divisors (see below), whose sum is σ = 95130141696. Its totient is φ = 29145240000.

The previous prime is 56665656169. The next prime is 56665656227. The reversal of 56665656201 is 10265656665.

It is not a de Polignac number, because 56665656201 - 2⁵ = 56665656169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56665656101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1191055 + ... + 1237716.

It is an arithmetic number, because the mean of its divisors is an integer number (2972816928).

Almost surely, 2^56665656201 is an apocalyptic number.

It is an amenable number.

56665656201 is a deficient number, since it is larger than the sum of its proper divisors (38464485495).

56665656201 is a wasteful number, since it uses less digits than its factorization.

56665656201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428893.

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

The spelling of 56665656201 in words is "fifty-six billion, six hundred sixty-five million, six hundred fifty-six thousand, two hundred one".