64988704872 has 192 divisors, whose sum is σ = 226048193280. Its totient is φ = 16394628096.

The previous prime is 64988704843. The next prime is 64988704873. The reversal of 64988704872 is 27840788946.

64988704872 is a `hidden beast` number, since 6 + 4 + 9 + 88 + 70 + 487 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (64988704873) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64933 + ... + 366324.

It is an arithmetic number, because the mean of its divisors is an integer number (1177334340).

Almost surely, 2^64988704872 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 64988704872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113024096640).

64988704872 is an abundant number, since it is smaller than the sum of its proper divisors (161059488408).

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

64988704872 is a wasteful number, since it uses less digits than its factorization.

64988704872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431312 (or 431305 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 64988704872 in words is "sixty-four billion, nine hundred eighty-eight million, seven hundred four thousand, eight hundred seventy-two".