64477100632 has 64 divisors (see below), whose sum is σ = 142702755840. Its totient is φ = 26726544000.

The previous prime is 64477100621. The next prime is 64477100683. The reversal of 64477100632 is 23600177446.

It is a congruent number.

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, 3377418 + ... + 3396454.

It is an arithmetic number, because the mean of its divisors is an integer number (2229730560).

Almost surely, 2^64477100632 is an apocalyptic number.

64477100632 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64477100632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71351377920).

64477100632 is an abundant number, since it is smaller than the sum of its proper divisors (78225655208).

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

64477100632 is a wasteful number, since it uses less digits than its factorization.

64477100632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21032 (or 21028 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 64477100632 in words is "sixty-four billion, four hundred seventy-seven million, one hundred thousand, six hundred thirty-two".