129165813762431 has 2 divisors, whose sum is σ = 129165813762432. Its totient is φ = 129165813762430.

The previous prime is 129165813762413. The next prime is 129165813762451. The reversal of 129165813762431 is 134267318561921.

Together with previous prime (129165813762413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129165813762431 is a prime.

It is a super-2 number, since 2×129165813762431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129165813762451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64582906881215 + 64582906881216.

It is an arithmetic number, because the mean of its divisors is an integer number (64582906881216).

Almost surely, 2^{129165813762431} is an apocalyptic number.

129165813762431 is a deficient number, since it is larger than the sum of its proper divisors (1).

129165813762431 is an equidigital number, since it uses as much as digits as its factorization.

129165813762431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 59.

The spelling of 129165813762431 in words is "one hundred twenty-nine trillion, one hundred sixty-five billion, eight hundred thirteen million, seven hundred sixty-two thousand, four hundred thirty-one".