29199139172 has 24 divisors (see below), whose sum is σ = 60412013760. Its totient is φ = 12082402080.

The previous prime is 29199139169. The next prime is 29199139217. The reversal of 29199139172 is 27193199192.

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, 17978954 + ... + 17980577.

It is an arithmetic number, because the mean of its divisors is an integer number (2517167240).

Almost surely, 2^29199139172 is an apocalyptic number.

It is an amenable number.

29199139172 is an abundant number, since it is smaller than the sum of its proper divisors (31212874588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29199139172 is a wasteful number, since it uses less digits than its factorization.

29199139172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35959571 (or 35959569 counting only the distinct ones).

The product of its digits is 551124, while the sum is 53.

The spelling of 29199139172 in words is "twenty-nine billion, one hundred ninety-nine million, one hundred thirty-nine thousand, one hundred seventy-two".