65624978312 has 64 divisors (see below), whose sum is σ = 127146240000. Its totient is φ = 31740022080.

The previous prime is 65624978281. The next prime is 65624978339. The reversal of 65624978312 is 21387942656.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11593739 + ... + 11599397.

It is an arithmetic number, because the mean of its divisors is an integer number (1986660000).

Almost surely, 2^65624978312 is an apocalyptic number.

It is an amenable number.

65624978312 is a deficient number, since it is larger than the sum of its proper divisors (61521261688).

65624978312 is a wasteful number, since it uses less digits than its factorization.

65624978312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114 (or 6110 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 65624978312 in words is "sixty-five billion, six hundred twenty-four million, nine hundred seventy-eight thousand, three hundred twelve".