29172581912 has 32 divisors (see below), whose sum is σ = 57693000000. Its totient is φ = 13790863008.

The previous prime is 29172581909. The next prime is 29172581917. The reversal of 29172581912 is 21918527192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29172581917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116462 + ... + 268157.

It is an arithmetic number, because the mean of its divisors is an integer number (1802906250).

Almost surely, 2^29172581912 is an apocalyptic number.

It is an amenable number.

29172581912 is a deficient number, since it is larger than the sum of its proper divisors (28520418088).

29172581912 is a wasteful number, since it uses less digits than its factorization.

29172581912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385143 (or 385139 counting only the distinct ones).

The product of its digits is 181440, while the sum is 47.

The spelling of 29172581912 in words is "twenty-nine billion, one hundred seventy-two million, five hundred eighty-one thousand, nine hundred twelve".