202104961812 has 144 divisors (see below), whose sum is σ = 568046640000. Its totient is φ = 62113319424.

The previous prime is 202104961691. The next prime is 202104961829. The reversal of 202104961812 is 218169401202.

202104961812 is a `hidden beast` number, since 2 + 0 + 21 + 0 + 4 + 9 + 618 + 12 = 666.

It is a super-3 number, since 3×202104961812³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16767564 + ... + 16779612.

Almost surely, 2^202104961812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202104961812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284023320000).

202104961812 is an abundant number, since it is smaller than the sum of its proper divisors (365941678188).

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

202104961812 is a wasteful number, since it uses less digits than its factorization.

202104961812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13007 (or 12986 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 202104961812 in words is "two hundred two billion, one hundred four million, nine hundred sixty-one thousand, eight hundred twelve".