64085761916 has 18 divisors (see below), whose sum is σ = 123272406600. Its totient is φ = 29129891560.

The previous prime is 64085761843. The next prime is 64085761939. The reversal of 64085761916 is 61916758046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66203816 + ... + 66204783.

Almost surely, 2^64085761916 is an apocalyptic number.

It is an amenable number.

64085761916 is a deficient number, since it is larger than the sum of its proper divisors (59186644684).

64085761916 is a wasteful number, since it uses less digits than its factorization.

64085761916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132408625 (or 132408612 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 64085761916 in words is "sixty-four billion, eighty-five million, seven hundred sixty-one thousand, nine hundred sixteen".