129451299759 has 12 divisors (see below), whose sum is σ = 187871399352. Its totient is φ = 85891856400.

The previous prime is 129451299721. The next prime is 129451299787. The reversal of 129451299759 is 957992154921.

129451299759 is a `hidden beast` number, since 1 + 29 + 4 + 512 + 9 + 97 + 5 + 9 = 666.

It is not a de Polignac number, because 129451299759 - 2²⁸ = 129182864303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129451299696 and 129451299705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129451299359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34082172 + ... + 34085969.

It is an arithmetic number, because the mean of its divisors is an integer number (15655949946).

Almost surely, 2^129451299759 is an apocalyptic number.

129451299759 is a deficient number, since it is larger than the sum of its proper divisors (58420099593).

129451299759 is a wasteful number, since it uses less digits than its factorization.

129451299759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68168358 (or 68168355 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 63.

The spelling of 129451299759 in words is "one hundred twenty-nine billion, four hundred fifty-one million, two hundred ninety-nine thousand, seven hundred fifty-nine".