20203351870172 has 24 divisors (see below), whose sum is σ = 37038008683200. Its totient is φ = 9629882248896.

The previous prime is 20203351870109. The next prime is 20203351870223. The reversal of 20203351870172 is 27107815330202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102312523 + ... + 1102330850.

It is an arithmetic number, because the mean of its divisors is an integer number (1543250361800).

Almost surely, 2^{20203351870172} is an apocalyptic number.

It is an amenable number.

20203351870172 is a deficient number, since it is larger than the sum of its proper divisors (16834656813028).

20203351870172 is a wasteful number, since it uses less digits than its factorization.

20203351870172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204643485 (or 2204643483 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 20203351870172 in words is "twenty trillion, two hundred three billion, three hundred fifty-one million, eight hundred seventy thousand, one hundred seventy-two".