18419511075851 has 2 divisors, whose sum is σ = 18419511075852. Its totient is φ = 18419511075850.

The previous prime is 18419511075829. The next prime is 18419511075863. The reversal of 18419511075851 is 15857011591481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18419511075851 - 2²² = 18419506881547 is a prime.

It is not a weakly prime, because it can be changed into another prime (18419511575851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9209755537925 + 9209755537926.

It is an arithmetic number, because the mean of its divisors is an integer number (9209755537926).

Almost surely, 2^{18419511075851} is an apocalyptic number.

18419511075851 is a deficient number, since it is larger than the sum of its proper divisors (1).

18419511075851 is an equidigital number, since it uses as much as digits as its factorization.

18419511075851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016000, while the sum is 56.

The spelling of 18419511075851 in words is "eighteen trillion, four hundred nineteen billion, five hundred eleven million, seventy-five thousand, eight hundred fifty-one".