64963136784 has 160 divisors (see below), whose sum is σ = 215530205184. Its totient is φ = 16388190720.

The previous prime is 64963136741. The next prime is 64963136801. The reversal of 64963136784 is 48763136946.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222852 + ... + 423779.

Almost surely, 2^64963136784 is an apocalyptic number.

It is an amenable number.

64963136784 is an abundant number, since it is smaller than the sum of its proper divisors (150567068400).

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

64963136784 is a wasteful number, since it uses less digits than its factorization.

64963136784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646685 (or 646679 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 57.

The spelling of 64963136784 in words is "sixty-four billion, nine hundred sixty-three million, one hundred thirty-six thousand, seven hundred eighty-four".