64604716736 has 56 divisors (see below), whose sum is σ = 146576771616. Its totient is φ = 27675924480.

The previous prime is 64604716733. The next prime is 64604716753. The reversal of 64604716736 is 63761740646.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (64604716733) 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, 1064030 + ... + 1123106.

Almost surely, 2^64604716736 is an apocalyptic number.

It is an amenable number.

64604716736 is an abundant number, since it is smaller than the sum of its proper divisors (81972054880).

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

64604716736 is a wasteful number, since it uses less digits than its factorization.

64604716736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61537 (or 61527 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 64604716736 in words is "sixty-four billion, six hundred four million, seven hundred sixteen thousand, seven hundred thirty-six".