129877296413 has 4 divisors (see below), whose sum is σ = 129884041980. Its totient is φ = 129870550848.

The previous prime is 129877296389. The next prime is 129877296433. The reversal of 129877296413 is 314692778921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314692778921 = 15601 ⋅20171321.

It can be written as a sum of positive squares in 2 ways, for example, as 5636555929 + 124240740484 = 75077^2 + 352478^2 .

It is a cyclic number.

It is not a de Polignac number, because 129877296413 - 2²⁸ = 129608860957 is a prime.

It is a super-2 number, since 2×129877296413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129877296433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343820 + ... + 3382437.

It is an arithmetic number, because the mean of its divisors is an integer number (32471010495).

Almost surely, 2^129877296413 is an apocalyptic number.

It is an amenable number.

129877296413 is a deficient number, since it is larger than the sum of its proper divisors (6745567).

129877296413 is an equidigital number, since it uses as much as digits as its factorization.

129877296413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745566.

The product of its digits is 9144576, while the sum is 59.

The spelling of 129877296413 in words is "one hundred twenty-nine billion, eight hundred seventy-seven million, two hundred ninety-six thousand, four hundred thirteen".