129279352474 has 32 divisors (see below), whose sum is σ = 212111424000. Its totient is φ = 58860696384.

The previous prime is 129279352459. The next prime is 129279352507. The reversal of 129279352474 is 474253972921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17289 + ... + 508780.

It is an arithmetic number, because the mean of its divisors is an integer number (6628482000).

Almost surely, 2^129279352474 is an apocalyptic number.

129279352474 is a deficient number, since it is larger than the sum of its proper divisors (82832071526).

129279352474 is a wasteful number, since it uses less digits than its factorization.

129279352474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526342.

The product of its digits is 7620480, while the sum is 55.

The spelling of 129279352474 in words is "one hundred twenty-nine billion, two hundred seventy-nine million, three hundred fifty-two thousand, four hundred seventy-four".