129269669938 has 16 divisors (see below), whose sum is σ = 194636332800. Its totient is φ = 64391002416.

The previous prime is 129269669897. The next prime is 129269670001. The reversal of 129269669938 is 839966962921.

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, 2549631 + ... + 2599837.

It is an arithmetic number, because the mean of its divisors is an integer number (12164770800).

Almost surely, 2^129269669938 is an apocalyptic number.

129269669938 is a deficient number, since it is larger than the sum of its proper divisors (65366662862).

129269669938 is a wasteful number, since it uses less digits than its factorization.

129269669938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55041.

The product of its digits is 136048896, while the sum is 70.

The spelling of 129269669938 in words is "one hundred twenty-nine billion, two hundred sixty-nine million, six hundred sixty-nine thousand, nine hundred thirty-eight".