201989813904 has 60 divisors (see below), whose sum is σ = 565463208336. Its totient is φ = 67309419456.

The previous prime is 201989813899. The next prime is 201989813917. The reversal of 201989813904 is 409318989102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264127 + ... + 688289.

Almost surely, 2^201989813904 is an apocalyptic number.

201989813904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201989813904 is an abundant number, since it is smaller than the sum of its proper divisors (363473394432).

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

201989813904 is a wasteful number, since it uses less digits than its factorization.

201989813904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427484 (or 427475 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 201989813904 in words is "two hundred one billion, nine hundred eighty-nine million, eight hundred thirteen thousand, nine hundred four".