18375722764811 has 2 divisors, whose sum is σ = 18375722764812. Its totient is φ = 18375722764810.

The previous prime is 18375722764769. The next prime is 18375722764829. The reversal of 18375722764811 is 11846722757381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18375722764811 - 2²² = 18375718570507 is a prime.

It is not a weakly prime, because it can be changed into another prime (18375722764871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9187861382405 + 9187861382406.

It is an arithmetic number, because the mean of its divisors is an integer number (9187861382406).

Almost surely, 2^{18375722764811} is an apocalyptic number.

18375722764811 is a deficient number, since it is larger than the sum of its proper divisors (1).

18375722764811 is an equidigital number, since it uses as much as digits as its factorization.

18375722764811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31610880, while the sum is 62.

The spelling of 18375722764811 in words is "eighteen trillion, three hundred seventy-five billion, seven hundred twenty-two million, seven hundred sixty-four thousand, eight hundred eleven".