64896955163677 has 16 divisors (see below), whose sum is σ = 79873762030720. Its totient is φ = 51346664448192.

The previous prime is 64896955163629. The next prime is 64896955163723. The reversal of 64896955163677 is 77636155969846.

It is a cyclic number.

It is not a de Polignac number, because 64896955163677 - 2²⁷ = 64896820945949 is a prime.

It is a super-2 number, since 2×64896955163677² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64896955163677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64896955163977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10186363 + ... + 15282535.

It is an arithmetic number, because the mean of its divisors is an integer number (4992110126920).

Almost surely, 2^{64896955163677} is an apocalyptic number.

It is an amenable number.

64896955163677 is a deficient number, since it is larger than the sum of its proper divisors (14976806867043).

64896955163677 is a wasteful number, since it uses less digits than its factorization.

64896955163677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236132.

The product of its digits is 12345177600, while the sum is 82.

The spelling of 64896955163677 in words is "sixty-four trillion, eight hundred ninety-six billion, nine hundred fifty-five million, one hundred sixty-three thousand, six hundred seventy-seven".