20471806078079 has 2 divisors, whose sum is σ = 20471806078080. Its totient is φ = 20471806078078.

The previous prime is 20471806078001. The next prime is 20471806078117. The reversal of 20471806078079 is 97087060817402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20471806078079 - 2²⁴ = 20471789300863 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20471806078379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10235903039039 + 10235903039040.

It is an arithmetic number, because the mean of its divisors is an integer number (10235903039040).

Almost surely, 2^{20471806078079} is an apocalyptic number.

20471806078079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20471806078079 is an equidigital number, since it uses as much as digits as its factorization.

20471806078079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 20471806078079 in words is "twenty trillion, four hundred seventy-one billion, eight hundred six million, seventy-eight thousand, seventy-nine".