64393055500 has 24 divisors (see below), whose sum is σ = 140634434304. Its totient is φ = 25757222000.

The previous prime is 64393055479. The next prime is 64393055513. The reversal of 64393055500 is 555039346.

It is a happy number.

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, 64392556 + ... + 64393555.

It is an arithmetic number, because the mean of its divisors is an integer number (5859768096).

Almost surely, 2^64393055500 is an apocalyptic number.

It is an amenable number.

64393055500 is an abundant number, since it is smaller than the sum of its proper divisors (76241378804).

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

64393055500 is a wasteful number, since it uses less digits than its factorization.

64393055500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128786130 (or 128786118 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 40.

The spelling of 64393055500 in words is "sixty-four billion, three hundred ninety-three million, fifty-five thousand, five hundred".