20043777107172 has 96 divisors (see below), whose sum is σ = 57569829839872. Its totient is φ = 5285516582016.

The previous prime is 20043777107153. The next prime is 20043777107177. The reversal of 20043777107172 is 27170177734002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20043777107177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6367443 + ... + 8979525.

Almost surely, 2^{20043777107172} is an apocalyptic number.

It is an amenable number.

20043777107172 is an abundant number, since it is smaller than the sum of its proper divisors (37526052732700).

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

20043777107172 is a wasteful number, since it uses less digits than its factorization.

20043777107172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619137 (or 2619135 counting only the distinct ones).

The product of its (nonzero) digits is 806736, while the sum is 48.

The spelling of 20043777107172 in words is "twenty trillion, forty-three billion, seven hundred seventy-seven million, one hundred seven thousand, one hundred seventy-two".