18720454402711 has 2 divisors, whose sum is σ = 18720454402712. Its totient is φ = 18720454402710.

The previous prime is 18720454402687. The next prime is 18720454402739. The reversal of 18720454402711 is 11720445402781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18720454402711 - 2²³ = 18720446014103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18720454406711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9360227201355 + 9360227201356.

It is an arithmetic number, because the mean of its divisors is an integer number (9360227201356).

Almost surely, 2^{18720454402711} is an apocalyptic number.

18720454402711 is a deficient number, since it is larger than the sum of its proper divisors (1).

18720454402711 is an equidigital number, since it uses as much as digits as its factorization.

18720454402711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 18720454402711 in words is "eighteen trillion, seven hundred twenty billion, four hundred fifty-four million, four hundred two thousand, seven hundred eleven".