129707683493 has 4 divisors (see below), whose sum is σ = 130189868460. Its totient is φ = 129225498528.

The previous prime is 129707683481. The next prime is 129707683519. The reversal of 129707683493 is 394386707921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16449858049 + 113257825444 = 128257^2 + 336538^2 .

It is a cyclic number.

It is not a de Polignac number, because 129707683493 - 2¹⁴ = 129707667109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129707683433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241092080 + ... + 241092617.

It is an arithmetic number, because the mean of its divisors is an integer number (32547467115).

Almost surely, 2^129707683493 is an apocalyptic number.

It is an amenable number.

129707683493 is a deficient number, since it is larger than the sum of its proper divisors (482184967).

129707683493 is an equidigital number, since it uses as much as digits as its factorization.

129707683493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482184966.

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 129707683493 in words is "one hundred twenty-nine billion, seven hundred seven million, six hundred eighty-three thousand, four hundred ninety-three".