64677377184 has 96 divisors (see below), whose sum is σ = 194155678080. Its totient is φ = 18467484672.

The previous prime is 64677377153. The next prime is 64677377201. The reversal of 64677377184 is 48177377646.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054102 + ... + 1113770.

It is an arithmetic number, because the mean of its divisors is an integer number (2022454980).

Almost surely, 2^64677377184 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 64677377184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97077839040).

64677377184 is an abundant number, since it is smaller than the sum of its proper divisors (129478300896).

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

64677377184 is a wasteful number, since it uses less digits than its factorization.

64677377184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61302 (or 61294 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 60.

The spelling of 64677377184 in words is "sixty-four billion, six hundred seventy-seven million, three hundred seventy-seven thousand, one hundred eighty-four".