220871499732791 has 2 divisors, whose sum is σ = 220871499732792. Its totient is φ = 220871499732790.

The previous prime is 220871499732761. The next prime is 220871499732857. The reversal of 220871499732791 is 197237994178022.

220871499732791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220871499732791 - 2³⁰ = 220870425990967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220871499732721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110435749866395 + 110435749866396.

It is an arithmetic number, because the mean of its divisors is an integer number (110435749866396).

Almost surely, 2^{220871499732791} is an apocalyptic number.

220871499732791 is a deficient number, since it is larger than the sum of its proper divisors (1).

220871499732791 is an equidigital number, since it uses as much as digits as its factorization.

220871499732791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192036096, while the sum is 71.

The spelling of 220871499732791 in words is "two hundred twenty trillion, eight hundred seventy-one billion, four hundred ninety-nine million, seven hundred thirty-two thousand, seven hundred ninety-one".