499997631900 has 72 divisors (see below), whose sum is σ = 1557941351344. Its totient is φ = 123076339200.

The previous prime is 499997631883. The next prime is 499997632003. The reversal of 499997631900 is 9136799994.

It is a super-2 number, since 2×499997631900² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 64098361 + ... + 64106160.

Almost surely, 2^499997631900 is an apocalyptic number.

It is an amenable number.

499997631900 is an abundant number, since it is smaller than the sum of its proper divisors (1057943719444).

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

499997631900 is a wasteful number, since it uses less digits than its factorization.

499997631900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128204551 (or 128204544 counting only the distinct ones).

The product of its (nonzero) digits is 29760696, while the sum is 66.

The spelling of 499997631900 in words is "four hundred ninety-nine billion, nine hundred ninety-seven million, six hundred thirty-one thousand, nine hundred".