509318985700 has 72 divisors (see below), whose sum is σ = 1303856658944. Its totient is φ = 168990624000.

The previous prime is 509318985697. The next prime is 509318985727. The reversal of 509318985700 is 7589813905.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11713761 + ... + 11757160.

Almost surely, 2^509318985700 is an apocalyptic number.

509318985700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

509318985700 is an abundant number, since it is smaller than the sum of its proper divisors (794537673244).

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

509318985700 is a wasteful number, since it uses less digits than its factorization.

509318985700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23470973 (or 23470966 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 509318985700 in words is "five hundred nine billion, three hundred eighteen million, nine hundred eighty-five thousand, seven hundred".