29505318172 has 12 divisors (see below), whose sum is σ = 56328334776. Its totient is φ = 13411508240.

The previous prime is 29505318119. The next prime is 29505318179. The reversal of 29505318172 is 27181350592.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29505318179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335287663 + ... + 335287750.

It is an arithmetic number, because the mean of its divisors is an integer number (4694027898).

Almost surely, 2^29505318172 is an apocalyptic number.

29505318172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

29505318172 is a deficient number, since it is larger than the sum of its proper divisors (26823016604).

29505318172 is a wasteful number, since it uses less digits than its factorization.

29505318172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670575428 (or 670575426 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 29505318172 in words is "twenty-nine billion, five hundred five million, three hundred eighteen thousand, one hundred seventy-two".