129732769857 has 8 divisors (see below), whose sum is σ = 173281030560. Its totient is φ = 86336511200.

The previous prime is 129732769847. The next prime is 129732769877. The reversal of 129732769857 is 758967237921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129732769857 - 2¹⁴ = 129732753473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129732769847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37998519 + ... + 38001932.

It is an arithmetic number, because the mean of its divisors is an integer number (21660128820).

Almost surely, 2^129732769857 is an apocalyptic number.

It is an amenable number.

129732769857 is a deficient number, since it is larger than the sum of its proper divisors (43548260703).

129732769857 is an equidigital number, since it uses as much as digits as its factorization.

129732769857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76001023.

The product of its digits is 80015040, while the sum is 66.

The spelling of 129732769857 in words is "one hundred twenty-nine billion, seven hundred thirty-two million, seven hundred sixty-nine thousand, eight hundred fifty-seven".