202112400440 has 64 divisors (see below), whose sum is σ = 486534708000. Its totient is φ = 75334371840.

The previous prime is 202112400439. The next prime is 202112400499. The reversal of 202112400440 is 44004211202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2133455 + ... + 2226174.

Almost surely, 2^202112400440 is an apocalyptic number.

202112400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202112400440 is an abundant number, since it is smaller than the sum of its proper divisors (284422307560).

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

202112400440 is a wasteful number, since it uses less digits than its factorization.

202112400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359720 (or 4359716 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 202112400440 its reverse (44004211202), we get a palindrome (246116611642).

The spelling of 202112400440 in words is "two hundred two billion, one hundred twelve million, four hundred thousand, four hundred forty".