64015814928 has 160 divisors (see below), whose sum is σ = 184510190592. Its totient is φ = 18992332800.

The previous prime is 64015814903. The next prime is 64015814939. The reversal of 64015814928 is 82941851046.

64015814928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5429776 + ... + 5441552.

Almost surely, 2^64015814928 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 64015814928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92255095296).

64015814928 is an abundant number, since it is smaller than the sum of its proper divisors (120494375664).

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

64015814928 is a wasteful number, since it uses less digits than its factorization.

64015814928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12113 (or 12107 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 64015814928 in words is "sixty-four billion, fifteen million, eight hundred fourteen thousand, nine hundred twenty-eight".