13185868186507 has 2 divisors, whose sum is σ = 13185868186508. Its totient is φ = 13185868186506.

The previous prime is 13185868186481. The next prime is 13185868186573. The reversal of 13185868186507 is 70568186858131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13185868186507 - 2²³ = 13185859797899 is a prime.

It is a super-2 number, since 2×13185868186507² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13185868106507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6592934093253 + 6592934093254.

It is an arithmetic number, because the mean of its divisors is an integer number (6592934093254).

Almost surely, 2^{13185868186507} is an apocalyptic number.

13185868186507 is a deficient number, since it is larger than the sum of its proper divisors (1).

13185868186507 is an equidigital number, since it uses as much as digits as its factorization.

13185868186507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77414400, while the sum is 67.

The spelling of 13185868186507 in words is "thirteen trillion, one hundred eighty-five billion, eight hundred sixty-eight million, one hundred eighty-six thousand, five hundred seven".