18353372047 has 2 divisors, whose sum is σ = 18353372048. Its totient is φ = 18353372046.

The previous prime is 18353372017. The next prime is 18353372117. The reversal of 18353372047 is 74027335381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18353372047 - 2⁷ = 18353371919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18353371994 and 18353372012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18353372017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9176686023 + 9176686024.

It is an arithmetic number, because the mean of its divisors is an integer number (9176686024).

Almost surely, 2^18353372047 is an apocalyptic number.

18353372047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18353372047 is an equidigital number, since it uses as much as digits as its factorization.

18353372047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 18353372047 in words is "eighteen billion, three hundred fifty-three million, three hundred seventy-two thousand, forty-seven".