64163874064885 has 64 divisors (see below), whose sum is σ = 96661865963520. Its totient is φ = 39867216871680.

The previous prime is 64163874064879. The next prime is 64163874064933. The reversal of 64163874064885 is 58846047836146.

It is not a de Polignac number, because 64163874064885 - 2²⁷ = 64163739847157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 220454355 + ... + 220745215.

It is an arithmetic number, because the mean of its divisors is an integer number (1510341655680).

Almost surely, 2^{64163874064885} is an apocalyptic number.

It is an amenable number.

64163874064885 is a deficient number, since it is larger than the sum of its proper divisors (32497991898635).

64163874064885 is a wasteful number, since it uses less digits than its factorization.

64163874064885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305338.

The product of its (nonzero) digits is 743178240, while the sum is 70.

The spelling of 64163874064885 in words is "sixty-four trillion, one hundred sixty-three billion, eight hundred seventy-four million, sixty-four thousand, eight hundred eighty-five".