18567730440139 has 2 divisors, whose sum is σ = 18567730440140. Its totient is φ = 18567730440138.

The previous prime is 18567730440131. The next prime is 18567730440211. The reversal of 18567730440139 is 93104403776581.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (93104403776581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18567730440139 - 2³ = 18567730440131 is a prime.

It is a super-2 number, since 2×18567730440139² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18567730440131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9283865220069 + 9283865220070.

It is an arithmetic number, because the mean of its divisors is an integer number (9283865220070).

Almost surely, 2^{18567730440139} is an apocalyptic number.

18567730440139 is a deficient number, since it is larger than the sum of its proper divisors (1).

18567730440139 is an equidigital number, since it uses as much as digits as its factorization.

18567730440139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 18567730440139 in words is "eighteen trillion, five hundred sixty-seven billion, seven hundred thirty million, four hundred forty thousand, one hundred thirty-nine".