201864555984 has 120 divisors (see below), whose sum is σ = 653287041120. Its totient is φ = 53238995712.

The previous prime is 201864555943. The next prime is 201864556013. The reversal of 201864555984 is 489555468102.

201864555984 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 3270454 + ... + 3331605.

It is an arithmetic number, because the mean of its divisors is an integer number (5444058676).

Almost surely, 2^201864555984 is an apocalyptic number.

201864555984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201864555984 is an abundant number, since it is smaller than the sum of its proper divisors (451422485136).

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

201864555984 is a wasteful number, since it uses less digits than its factorization.

201864555984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602097 (or 6602084 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 57.

The spelling of 201864555984 in words is "two hundred one billion, eight hundred sixty-four million, five hundred fifty-five thousand, nine hundred eighty-four".