64566417630 has 64 divisors (see below), whose sum is σ = 182050219008. Its totient is φ = 14448428160.

The previous prime is 64566417613. The next prime is 64566417637. The reversal of 64566417630 is 3671466546.

It is a self number, because there is not a number n which added to its sum of digits gives 64566417630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64566417637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7520934 + ... + 7529513.

It is an arithmetic number, because the mean of its divisors is an integer number (2844534672).

Almost surely, 2^64566417630 is an apocalyptic number.

64566417630 is an abundant number, since it is smaller than the sum of its proper divisors (117483801378).

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

64566417630 is a wasteful number, since it uses less digits than its factorization.

64566417630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15050481.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 64566417630 in words is "sixty-four billion, five hundred sixty-six million, four hundred seventeen thousand, six hundred thirty".