201819636399996 has 96 divisors (see below), whose sum is σ = 523624775520000. Its totient is φ = 67223249555904.

The previous prime is 201819636399989. The next prime is 201819636400007. The reversal of 201819636399996 is 699993636918102.

201819636399996 is a `hidden beast` number, since 2 + 0 + 1 + 8 + 196 + 36 + 399 + 9 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452926155 + ... + 1453065053.

It is an arithmetic number, because the mean of its divisors is an integer number (5454424745000).

Almost surely, 2^{201819636399996} is an apocalyptic number.

It is an amenable number.

201819636399996 is an abundant number, since it is smaller than the sum of its proper divisors (321805139120004).

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

201819636399996 is a wasteful number, since it uses less digits than its factorization.

201819636399996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148808 (or 148800 counting only the distinct ones).

The product of its (nonzero) digits is 1836660096, while the sum is 81.

The spelling of 201819636399996 in words is "two hundred one trillion, eight hundred nineteen billion, six hundred thirty-six million, three hundred ninety-nine thousand, nine hundred ninety-six".