64494952704 has 432 divisors, whose sum is σ = 237364912512. Its totient is φ = 17008164864.

The previous prime is 64494952663. The next prime is 64494952721. The reversal of 64494952704 is 40725949446.

64494952704 is a `hidden beast` number, since 64 + 494 + 95 + 2 + 7 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5655232 + ... + 5666624.

It is an arithmetic number, because the mean of its divisors is an integer number (549455816).

Almost surely, 2^64494952704 is an apocalyptic number.

64494952704 is a gapful number since it is divisible by the number (64) 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 64494952704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118682456256).

64494952704 is an abundant number, since it is smaller than the sum of its proper divisors (172869959808).

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

64494952704 is a wasteful number, since it uses less digits than its factorization.

64494952704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444 (or 11418 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 64494952704 in words is "sixty-four billion, four hundred ninety-four million, nine hundred fifty-two thousand, seven hundred four".