64871613612 has 48 divisors (see below), whose sum is σ = 181123027680. Its totient is φ = 19960496064.

The previous prime is 64871613581. The next prime is 64871613617. The reversal of 64871613612 is 21631617846.

64871613612 is a `hidden beast` number, since 6 + 4 + 8 + 7 + 16 + 13 + 612 = 666.

It is not an unprimeable number, because it can be changed into a prime (64871613617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23101023 + ... + 23103830.

It is an arithmetic number, because the mean of its divisors is an integer number (3773396410).

Almost surely, 2^64871613612 is an apocalyptic number.

It is an amenable number.

64871613612 is an abundant number, since it is smaller than the sum of its proper divisors (116251414068).

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

64871613612 is a wasteful number, since it uses less digits than its factorization.

64871613612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46204879 (or 46204871 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 64871613612 in words is "sixty-four billion, eight hundred seventy-one million, six hundred thirteen thousand, six hundred twelve".