64514679168 has 128 divisors (see below), whose sum is σ = 175602873600. Its totient is φ = 20974786560.

The previous prime is 64514679137. The next prime is 64514679169. The reversal of 64514679168 is 86197641546.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64514679169) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13553973 + ... + 13558731.

It is an arithmetic number, because the mean of its divisors is an integer number (1371897450).

Almost surely, 2^64514679168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64514679168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87801436800).

64514679168 is an abundant number, since it is smaller than the sum of its proper divisors (111088194432).

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

64514679168 is a wasteful number, since it uses less digits than its factorization.

64514679168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640 (or 5628 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The spelling of 64514679168 in words is "sixty-four billion, five hundred fourteen million, six hundred seventy-nine thousand, one hundred sixty-eight".