20426325971 has 4 divisors (see below), whose sum is σ = 21085239744. Its totient is φ = 19767412200.

The previous prime is 20426325949. The next prime is 20426325989. The reversal of 20426325971 is 17952362402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20426325971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20426325371) 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, 329456840 + ... + 329456901.

It is an arithmetic number, because the mean of its divisors is an integer number (5271309936).

Almost surely, 2^20426325971 is an apocalyptic number.

20426325971 is a deficient number, since it is larger than the sum of its proper divisors (658913773).

20426325971 is an equidigital number, since it uses as much as digits as its factorization.

20426325971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658913772.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 20426325971 in words is "twenty billion, four hundred twenty-six million, three hundred twenty-five thousand, nine hundred seventy-one".