64106460621 has 24 divisors (see below), whose sum is σ = 105833407680. Its totient is φ = 36629885376.

The previous prime is 64106460599. The next prime is 64106460631. The reversal of 64106460621 is 12606460146.

64106460621 is a `hidden beast` number, since 6 + 4 + 1 + 0 + 646 + 0 + 6 + 2 + 1 = 666.

It is not a de Polignac number, because 64106460621 - 2²⁶ = 64039351757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64106460631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1521010 + ... + 1562588.

It is an arithmetic number, because the mean of its divisors is an integer number (4409725320).

Almost surely, 2^64106460621 is an apocalyptic number.

It is an amenable number.

64106460621 is a deficient number, since it is larger than the sum of its proper divisors (41726947059).

64106460621 is a wasteful number, since it uses less digits than its factorization.

64106460621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66065 (or 66062 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 64106460621 in words is "sixty-four billion, one hundred six million, four hundred sixty thousand, six hundred twenty-one".