64014874728 has 128 divisors (see below), whose sum is σ = 188062560000. Its totient is φ = 17777018880.

The previous prime is 64014874709. The next prime is 64014874751. The reversal of 64014874728 is 82747841046.

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, 1835598 + ... + 1870146.

It is an arithmetic number, because the mean of its divisors is an integer number (1469238750).

Almost surely, 2^64014874728 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 64014874728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94031280000).

64014874728 is an abundant number, since it is smaller than the sum of its proper divisors (124047685272).

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

64014874728 is a wasteful number, since it uses less digits than its factorization.

64014874728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34875 (or 34871 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 64014874728 in words is "sixty-four billion, fourteen million, eight hundred seventy-four thousand, seven hundred twenty-eight".