20043777107171 has 4 divisors (see below), whose sum is σ = 20915245677072. Its totient is φ = 19172308537272.

The previous prime is 20043777107153. The next prime is 20043777107177. The reversal of 20043777107171 is 17170177734002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20043777107171 - 2³⁸ = 19768899200227 is a prime.

It is a super-2 number, since 2×20043777107171² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435734284916 + ... + 435734284961.

It is an arithmetic number, because the mean of its divisors is an integer number (5228811419268).

Almost surely, 2^{20043777107171} is an apocalyptic number.

20043777107171 is a deficient number, since it is larger than the sum of its proper divisors (871468569901).

20043777107171 is an equidigital number, since it uses as much as digits as its factorization.

20043777107171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871468569900.

The product of its (nonzero) digits is 403368, while the sum is 47.

The spelling of 20043777107171 in words is "twenty trillion, forty-three billion, seven hundred seventy-seven million, one hundred seven thousand, one hundred seventy-one".