18417227051 has 2 divisors, whose sum is σ = 18417227052. Its totient is φ = 18417227050.

The previous prime is 18417227021. The next prime is 18417227057. The reversal of 18417227051 is 15072271481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18417227051 - 2¹⁰ = 18417226027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 18417226996 and 18417227014.

It is not a weakly prime, because it can be changed into another prime (18417227057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9208613525 + 9208613526.

It is an arithmetic number, because the mean of its divisors is an integer number (9208613526).

Almost surely, 2^18417227051 is an apocalyptic number.

18417227051 is a deficient number, since it is larger than the sum of its proper divisors (1).

18417227051 is an equidigital number, since it uses as much as digits as its factorization.

18417227051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 18417227051 in words is "eighteen billion, four hundred seventeen million, two hundred twenty-seven thousand, fifty-one".