56401416660 has 24 divisors (see below), whose sum is σ = 157923966816. Its totient is φ = 15040377760.

The previous prime is 56401416641. The next prime is 56401416667. The reversal of 56401416660 is 6661410465.

It is a happy number.

It is a super-2 number, since 2×56401416660² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56401416667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470011746 + ... + 470011865.

It is an arithmetic number, because the mean of its divisors is an integer number (6580165284).

Almost surely, 2^56401416660 is an apocalyptic number.

It is an amenable number.

56401416660 is an abundant number, since it is smaller than the sum of its proper divisors (101522550156).

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

56401416660 is a wasteful number, since it uses less digits than its factorization.

56401416660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940023623 (or 940023621 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 56401416660 in words is "fifty-six billion, four hundred one million, four hundred sixteen thousand, six hundred sixty".