201839009904 has 120 divisors (see below), whose sum is σ = 653736412160. Its totient is φ = 56938287744.

The previous prime is 201839009903. The next prime is 201839009927. The reversal of 201839009904 is 409900938102.

It is a self number, because there is not a number n which added to its sum of digits gives 201839009904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201839009903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1187692 + ... + 1346955.

Almost surely, 2^201839009904 is an apocalyptic number.

201839009904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201839009904 is an abundant number, since it is smaller than the sum of its proper divisors (451897402256).

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

201839009904 is a wasteful number, since it uses less digits than its factorization.

201839009904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534747 (or 2534738 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 201839009904 in words is "two hundred one billion, eight hundred thirty-nine million, nine thousand, nine hundred four".