64649146764 has 24 divisors (see below), whose sum is σ = 157406618880. Its totient is φ = 20612771344.

The previous prime is 64649146663. The next prime is 64649146777. The reversal of 64649146764 is 46764194646.

64649146764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117117744 + ... + 117118295.

It is an arithmetic number, because the mean of its divisors is an integer number (6558609120).

Almost surely, 2^64649146764 is an apocalyptic number.

It is an amenable number.

64649146764 is an abundant number, since it is smaller than the sum of its proper divisors (92757472116).

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

64649146764 is a wasteful number, since it uses less digits than its factorization.

64649146764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234236069 (or 234236067 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 57.

The spelling of 64649146764 in words is "sixty-four billion, six hundred forty-nine million, one hundred forty-six thousand, seven hundred sixty-four".