129453984431 has 4 divisors (see below), whose sum is σ = 130385308200. Its totient is φ = 128522660664.

The previous prime is 129453984421. The next prime is 129453984433. The reversal of 129453984431 is 134489354921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134489354921 = 163 ⋅825088067.

It is a cyclic number.

It is not a de Polignac number, because 129453984431 - 2⁶ = 129453984367 is a prime.

It is a super-2 number, since 2×129453984431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129453984433) 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, 465661676 + ... + 465661953.

It is an arithmetic number, because the mean of its divisors is an integer number (32596327050).

Almost surely, 2^129453984431 is an apocalyptic number.

129453984431 is a deficient number, since it is larger than the sum of its proper divisors (931323769).

129453984431 is an equidigital number, since it uses as much as digits as its factorization.

129453984431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931323768.

The product of its digits is 3732480, while the sum is 53.

The spelling of 129453984431 in words is "one hundred twenty-nine billion, four hundred fifty-three million, nine hundred eighty-four thousand, four hundred thirty-one".