18476904807899 has 2 divisors, whose sum is σ = 18476904807900. Its totient is φ = 18476904807898.

The previous prime is 18476904807871. The next prime is 18476904807913. The reversal of 18476904807899 is 99870840967481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18476904807899 - 2¹⁶ = 18476904742363 is a prime.

It is a super-2 number, since 2×18476904807899² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18476904807859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9238452403949 + 9238452403950.

It is an arithmetic number, because the mean of its divisors is an integer number (9238452403950).

Almost surely, 2^{18476904807899} is an apocalyptic number.

18476904807899 is a deficient number, since it is larger than the sum of its proper divisors (1).

18476904807899 is an equidigital number, since it uses as much as digits as its factorization.

18476904807899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1755758592, while the sum is 80.

The spelling of 18476904807899 in words is "eighteen trillion, four hundred seventy-six billion, nine hundred four million, eight hundred seven thousand, eight hundred ninety-nine".