202161289600 has 48 divisors (see below), whose sum is σ = 499401568620. Its totient is φ = 80864514560.

The previous prime is 202161289591. The next prime is 202161289607. The reversal of 202161289600 is 6982161202.

202161289600 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 202161289600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202161289607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31584502 + ... + 31590901.

Almost surely, 2^202161289600 is an apocalyptic number.

202161289600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202161289600 is an abundant number, since it is smaller than the sum of its proper divisors (297240279020).

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

202161289600 is an equidigital number, since it uses as much as digits as its factorization.

202161289600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63175427 (or 63175410 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 202161289600 in words is "two hundred two billion, one hundred sixty-one million, two hundred eighty-nine thousand, six hundred".