64426649008 has 40 divisors (see below), whose sum is σ = 129122794640. Its totient is φ = 31117167360.

The previous prime is 64426648981. The next prime is 64426649033. The reversal of 64426649008 is 80094662446.

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, 309183 + ... + 473758.

It is an arithmetic number, because the mean of its divisors is an integer number (3228069866).

Almost surely, 2^64426649008 is an apocalyptic number.

It is an amenable number.

64426649008 is an abundant number, since it is smaller than the sum of its proper divisors (64696145632).

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

64426649008 is a wasteful number, since it uses less digits than its factorization.

64426649008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783125 (or 783119 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 64426649008 in words is "sixty-four billion, four hundred twenty-six million, six hundred forty-nine thousand, eight".