20015374871 has 2 divisors, whose sum is σ = 20015374872. Its totient is φ = 20015374870.

The previous prime is 20015374837. The next prime is 20015374891. The reversal of 20015374871 is 17847351002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20015374871 - 2⁶ = 20015374807 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 (20015374811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10007687435 + 10007687436.

It is an arithmetic number, because the mean of its divisors is an integer number (10007687436).

Almost surely, 2^20015374871 is an apocalyptic number.

20015374871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20015374871 is an equidigital number, since it uses as much as digits as its factorization.

20015374871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 20015374871 in words is "twenty billion, fifteen million, three hundred seventy-four thousand, eight hundred seventy-one".