129677892467 has 4 divisors (see below), whose sum is σ = 129682003080. Its totient is φ = 129673781856.

The previous prime is 129677892401. The next prime is 129677892469. The reversal of 129677892467 is 764298776921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 764298776921 = 2447 ⋅312341143.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129677892467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129677892397 and 129677892406.

It is not an unprimeable number, because it can be changed into a prime (129677892469) 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, 2007617 + ... + 2071202.

It is an arithmetic number, because the mean of its divisors is an integer number (32420500770).

Almost surely, 2^129677892467 is an apocalyptic number.

129677892467 is a deficient number, since it is larger than the sum of its proper divisors (4110613).

129677892467 is an equidigital number, since it uses as much as digits as its factorization.

129677892467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110612.

The product of its digits is 128024064, while the sum is 68.

The spelling of 129677892467 in words is "one hundred twenty-nine billion, six hundred seventy-seven million, eight hundred ninety-two thousand, four hundred sixty-seven".