64991394714 has 16 divisors (see below), whose sum is σ = 129991925952. Its totient is φ = 21662275488.

The previous prime is 64991394707. The next prime is 64991394731. The reversal of 64991394714 is 41749319946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286419 + ... + 460454.

It is an arithmetic number, because the mean of its divisors is an integer number (8124495372).

Almost surely, 2^64991394714 is an apocalyptic number.

64991394714 is an abundant number, since it is smaller than the sum of its proper divisors (65000531238).

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

64991394714 is a wasteful number, since it uses less digits than its factorization.

64991394714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761381.

The product of its digits is 5878656, while the sum is 57.

The spelling of 64991394714 in words is "sixty-four billion, nine hundred ninety-one million, three hundred ninety-four thousand, seven hundred fourteen".