64380751580 has 48 divisors (see below), whose sum is σ = 137564255136. Its totient is φ = 25303829760.

The previous prime is 64380751451. The next prime is 64380751597. The reversal of 64380751580 is 8515708346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471470 + ... + 592490.

It is an arithmetic number, because the mean of its divisors is an integer number (2865921982).

Almost surely, 2^64380751580 is an apocalyptic number.

It is an amenable number.

64380751580 is an abundant number, since it is smaller than the sum of its proper divisors (73183503556).

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

64380751580 is a wasteful number, since it uses less digits than its factorization.

64380751580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121494 (or 121492 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 64380751580 in words is "sixty-four billion, three hundred eighty million, seven hundred fifty-one thousand, five hundred eighty".