64211996328 has 32 divisors (see below), whose sum is σ = 160578211200. Its totient is φ = 21397569408.

The previous prime is 64211996293. The next prime is 64211996377. The reversal of 64211996328 is 82369911246.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319933 + ... + 480396.

It is an arithmetic number, because the mean of its divisors is an integer number (5018069100).

Almost surely, 2^64211996328 is an apocalyptic number.

It is an amenable number.

64211996328 is an abundant number, since it is smaller than the sum of its proper divisors (96366214872).

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

64211996328 is a wasteful number, since it uses less digits than its factorization.

64211996328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803681 (or 803677 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The spelling of 64211996328 in words is "sixty-four billion, two hundred eleven million, nine hundred ninety-six thousand, three hundred twenty-eight".