64116795577 has 4 divisors (see below), whose sum is σ = 64140448896. Its totient is φ = 64093142260.

The previous prime is 64116795541. The next prime is 64116795593. The reversal of 64116795577 is 77559761146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64116795577 - 2²³ = 64108406969 is a prime.

It is a super-2 number, since 2×64116795577² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64116795277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11822593 + ... + 11828014.

It is an arithmetic number, because the mean of its divisors is an integer number (16035112224).

Almost surely, 2^64116795577 is an apocalyptic number.

It is an amenable number.

64116795577 is a deficient number, since it is larger than the sum of its proper divisors (23653319).

64116795577 is a wasteful number, since it uses less digits than its factorization.

64116795577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23653318.

The product of its digits is 11113200, while the sum is 58.

The spelling of 64116795577 in words is "sixty-four billion, one hundred sixteen million, seven hundred ninety-five thousand, five hundred seventy-seven".