56106621040 has 20 divisors (see below), whose sum is σ = 130447894104. Its totient is φ = 22442648384.

The previous prime is 56106621019. The next prime is 56106621049. The reversal of 56106621040 is 4012660165.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 56106620993 and 56106621011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56106621049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350666302 + ... + 350666461.

Almost surely, 2^56106621040 is an apocalyptic number.

It is an amenable number.

56106621040 is an abundant number, since it is smaller than the sum of its proper divisors (74341273064).

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

56106621040 is a wasteful number, since it uses less digits than its factorization.

56106621040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701332776 (or 701332770 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 56106621040 in words is "fifty-six billion, one hundred six million, six hundred twenty-one thousand, forty".