64239852672 has 192 divisors, whose sum is σ = 194885084160. Its totient is φ = 20281098240.

The previous prime is 64239852643. The next prime is 64239852683. The reversal of 64239852672 is 27625893246.

64239852672 is a `hidden beast` number, since 6 + 4 + 23 + 98 + 526 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1659328 + ... + 1697600.

It is an arithmetic number, because the mean of its divisors is an integer number (1015026480).

Almost surely, 2^64239852672 is an apocalyptic number.

64239852672 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 64239852672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97442542080).

64239852672 is an abundant number, since it is smaller than the sum of its proper divisors (130645231488).

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

64239852672 is a wasteful number, since it uses less digits than its factorization.

64239852672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38371 (or 38356 counting only the distinct ones).

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

The spelling of 64239852672 in words is "sixty-four billion, two hundred thirty-nine million, eight hundred fifty-two thousand, six hundred seventy-two".