64616377712 has 20 divisors (see below), whose sum is σ = 125214339936. Its totient is φ = 32302999680.

The previous prime is 64616377691. The next prime is 64616377739. The reversal of 64616377712 is 21777361646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220589 + ... + 421772.

Almost surely, 2^64616377712 is an apocalyptic number.

It is an amenable number.

64616377712 is a deficient number, since it is larger than the sum of its proper divisors (60597962224).

64616377712 is a wasteful number, since it uses less digits than its factorization.

64616377712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648656 (or 648650 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 50.

The spelling of 64616377712 in words is "sixty-four billion, six hundred sixteen million, three hundred seventy-seven thousand, seven hundred twelve".