64173333380 has 48 divisors (see below), whose sum is σ = 145241268480. Its totient is φ = 23676678528.

The previous prime is 64173333379. The next prime is 64173333391. The reversal of 64173333380 is 8333337146.

64173333380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 249377 + ... + 436503.

It is an arithmetic number, because the mean of its divisors is an integer number (3025859760).

Almost surely, 2^64173333380 is an apocalyptic number.

It is an amenable number.

64173333380 is an abundant number, since it is smaller than the sum of its proper divisors (81067935100).

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

64173333380 is a wasteful number, since it uses less digits than its factorization.

64173333380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188468 (or 188466 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 41.

The spelling of 64173333380 in words is "sixty-four billion, one hundred seventy-three million, three hundred thirty-three thousand, three hundred eighty".