65479464640 has 56 divisors (see below), whose sum is σ = 156012075072. Its totient is φ = 26176819200.

The previous prime is 65479464629. The next prime is 65479464649. The reversal of 65479464640 is 4646497456.

It is not an unprimeable number, because it can be changed into a prime (65479464649) 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 7 ways as a sum of consecutive naturals, for example, 511065 + ... + 626215.

It is an arithmetic number, because the mean of its divisors is an integer number (2785929912).

Almost surely, 2^65479464640 is an apocalyptic number.

It is an amenable number.

65479464640 is an abundant number, since it is smaller than the sum of its proper divisors (90532610432).

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

65479464640 is a wasteful number, since it uses less digits than its factorization.

65479464640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116945 (or 116935 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 65479464640 in words is "sixty-five billion, four hundred seventy-nine million, four hundred sixty-four thousand, six hundred forty".