65222406564 has 48 divisors (see below), whose sum is σ = 178168534656. Its totient is φ = 18180460800.

The previous prime is 65222406559. The next prime is 65222406589. The reversal of 65222406564 is 46560422256.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9465547 + ... + 9472434.

It is an arithmetic number, because the mean of its divisors is an integer number (3711844472).

Almost surely, 2^65222406564 is an apocalyptic number.

It is an amenable number.

65222406564 is an abundant number, since it is smaller than the sum of its proper divisors (112946128092).

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

65222406564 is a wasteful number, since it uses less digits than its factorization.

65222406564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18938036 (or 18938034 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 65222406564 in words is "sixty-five billion, two hundred twenty-two million, four hundred six thousand, five hundred sixty-four".