18157436269039 has 2 divisors, whose sum is σ = 18157436269040. Its totient is φ = 18157436269038.

The previous prime is 18157436268991. The next prime is 18157436269043. The reversal of 18157436269039 is 93096263475181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18157436269039 - 2³³ = 18148846334447 is a prime.

It is a super-3 number, since 3×18157436269039³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18157436269069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9078718134519 + 9078718134520.

It is an arithmetic number, because the mean of its divisors is an integer number (9078718134520).

It is a 1-persistent number, because it is pandigital, but 2⋅18157436269039 = 36314872538078 is not.

Almost surely, 2^{18157436269039} is an apocalyptic number.

18157436269039 is a deficient number, since it is larger than the sum of its proper divisors (1).

18157436269039 is an equidigital number, since it uses as much as digits as its factorization.

18157436269039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 18157436269039 in words is "eighteen trillion, one hundred fifty-seven billion, four hundred thirty-six million, two hundred sixty-nine thousand, thirty-nine".