64161713968 has 20 divisors (see below), whose sum is σ = 135614532168. Its totient is φ = 29164415360.

The previous prime is 64161713933. The next prime is 64161713971. The reversal of 64161713968 is 86931716146.

It is a super-2 number, since 2×64161713968² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 182277421 + ... + 182277772.

Almost surely, 2^64161713968 is an apocalyptic number.

It is an amenable number.

64161713968 is an abundant number, since it is smaller than the sum of its proper divisors (71452818200).

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

64161713968 is a wasteful number, since it uses less digits than its factorization.

64161713968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364555212 (or 364555206 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The spelling of 64161713968 in words is "sixty-four billion, one hundred sixty-one million, seven hundred thirteen thousand, nine hundred sixty-eight".