129477118953 has 32 divisors (see below), whose sum is σ = 212594973696. Its totient is φ = 68257147968.

The previous prime is 129477118943. The next prime is 129477119003. The reversal of 129477118953 is 359811774921.

It is not a de Polignac number, because 129477118953 - 2⁴ = 129477118937 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 129477118893 and 129477118902.

It is not an unprimeable number, because it can be changed into a prime (129477118943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355150 + ... + 620552.

It is an arithmetic number, because the mean of its divisors is an integer number (6643592928).

Almost surely, 2^129477118953 is an apocalyptic number.

129477118953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129477118953 is a deficient number, since it is larger than the sum of its proper divisors (83117854743).

129477118953 is a wasteful number, since it uses less digits than its factorization.

129477118953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267213.

The product of its digits is 3810240, while the sum is 57.

The spelling of 129477118953 in words is "one hundred twenty-nine billion, four hundred seventy-seven million, one hundred eighteen thousand, nine hundred fifty-three".