664720045110 has 80 divisors (see below), whose sum is σ = 1949845491792. Its totient is φ = 161144251200.

The previous prime is 664720045061. The next prime is 664720045111. The reversal of 664720045110 is 11540027466.

664720045110 is a `hidden beast` number, since 6 + 647 + 2 + 0 + 0 + 4 + 5 + 1 + 1 + 0 = 666.

664720045110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664720045111) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37293001 + ... + 37310820.

Almost surely, 2^664720045110 is an apocalyptic number.

664720045110 is an abundant number, since it is smaller than the sum of its proper divisors (1285125446682).

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

664720045110 is a wasteful number, since it uses less digits than its factorization.

664720045110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74603851 (or 74603842 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 664720045110 in words is "six hundred sixty-four billion, seven hundred twenty million, forty-five thousand, one hundred ten".