20043777107071 has 4 divisors (see below), whose sum is σ = 20048039024832. Its totient is φ = 20039515189312.

The previous prime is 20043777107051. The next prime is 20043777107153. The reversal of 20043777107071 is 17070177734002.

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 20043777107071 - 2²¹ = 20043775009919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043777107021) 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, 2130951826 + ... + 2130961231.

It is an arithmetic number, because the mean of its divisors is an integer number (5012009756208).

Almost surely, 2^{20043777107071} is an apocalyptic number.

20043777107071 is a deficient number, since it is larger than the sum of its proper divisors (4261917761).

20043777107071 is an equidigital number, since it uses as much as digits as its factorization.

20043777107071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261917760.

The product of its (nonzero) digits is 403368, while the sum is 46.

The spelling of 20043777107071 in words is "twenty trillion, forty-three billion, seven hundred seventy-seven million, one hundred seven thousand, seventy-one".