56665405272 has 64 divisors (see below), whose sum is σ = 162614488320. Its totient is φ = 16118782848.

The previous prime is 56665405271. The next prime is 56665405273. The reversal of 56665405272 is 27250456665.

56665405272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56665405271) and next prime (56665405273).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56665405271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704803 + ... + 781074.

It is an arithmetic number, because the mean of its divisors is an integer number (2540851380).

Almost surely, 2^56665405272 is an apocalyptic number.

It is an amenable number.

56665405272 is an abundant number, since it is smaller than the sum of its proper divisors (105949083048).

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

56665405272 is a wasteful number, since it uses less digits than its factorization.

56665405272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486120 (or 1486116 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 56665405272 in words is "fifty-six billion, six hundred sixty-five million, four hundred five thousand, two hundred seventy-two".