64624222668 has 24 divisors (see below), whose sum is σ = 153634945968. Its totient is φ = 21134965696.

The previous prime is 64624222661. The next prime is 64624222703. The reversal of 64624222668 is 86622242646.

It is not an unprimeable number, because it can be changed into a prime (64624222661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50804571 + ... + 50805842.

It is an arithmetic number, because the mean of its divisors is an integer number (6401456082).

Almost surely, 2^64624222668 is an apocalyptic number.

It is an amenable number.

64624222668 is an abundant number, since it is smaller than the sum of its proper divisors (89010723300).

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

64624222668 is a wasteful number, since it uses less digits than its factorization.

64624222668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101610473 (or 101610471 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 48.

The spelling of 64624222668 in words is "sixty-four billion, six hundred twenty-four million, two hundred twenty-two thousand, six hundred sixty-eight".