129379526834 has 16 divisors (see below), whose sum is σ = 205758786816. Its totient is φ = 60803400000.

The previous prime is 129379526821. The next prime is 129379526879. The reversal of 129379526834 is 438625973921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507942 + ... + 2559009.

It is an arithmetic number, because the mean of its divisors is an integer number (12859924176).

Almost surely, 2^129379526834 is an apocalyptic number.

129379526834 is a deficient number, since it is larger than the sum of its proper divisors (76379259982).

129379526834 is a wasteful number, since it uses less digits than its factorization.

129379526834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067721.

The product of its digits is 19595520, while the sum is 59.

The spelling of 129379526834 in words is "one hundred twenty-nine billion, three hundred seventy-nine million, five hundred twenty-six thousand, eight hundred thirty-four".