18856985075711 has 2 divisors, whose sum is σ = 18856985075712. Its totient is φ = 18856985075710.

The previous prime is 18856985075671. The next prime is 18856985075777. The reversal of 18856985075711 is 11757058965881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18856985075711 - 2¹⁴ = 18856985059327 is a prime.

It is a super-2 number, since 2×18856985075711² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18856985075911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9428492537855 + 9428492537856.

It is an arithmetic number, because the mean of its divisors is an integer number (9428492537856).

Almost surely, 2^{18856985075711} is an apocalyptic number.

18856985075711 is a deficient number, since it is larger than the sum of its proper divisors (1).

18856985075711 is an equidigital number, since it uses as much as digits as its factorization.

18856985075711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344000, while the sum is 71.

The spelling of 18856985075711 in words is "eighteen trillion, eight hundred fifty-six billion, nine hundred eighty-five million, seventy-five thousand, seven hundred eleven".