29317397217 has 8 divisors (see below), whose sum is σ = 39102218496. Its totient is φ = 19538753712.

The previous prime is 29317397171. The next prime is 29317397237. The reversal of 29317397217 is 71279371392.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29317397217 - 2¹² = 29317393121 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 29317397217.

It is not an unprimeable number, because it can be changed into a prime (29317397237) 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, 1533358 + ... + 1552359.

It is an arithmetic number, because the mean of its divisors is an integer number (4887777312).

Almost surely, 2^29317397217 is an apocalyptic number.

It is an amenable number.

29317397217 is a deficient number, since it is larger than the sum of its proper divisors (9784821279).

29317397217 is a wasteful number, since it uses less digits than its factorization.

29317397217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088887.

The product of its digits is 1000188, while the sum is 51.

The spelling of 29317397217 in words is "twenty-nine billion, three hundred seventeen million, three hundred ninety-seven thousand, two hundred seventeen".