29931796961279 has 8 divisors (see below), whose sum is σ = 30588101860608. Its totient is φ = 29276302818520.

The previous prime is 29931796961273. The next prime is 29931796961299. The reversal of 29931796961279 is 97216969713992.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29931796961279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29931796961273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202614497 + ... + 202762170.

It is an arithmetic number, because the mean of its divisors is an integer number (3823512732576).

Almost surely, 2^{29931796961279} is an apocalyptic number.

29931796961279 is a deficient number, since it is larger than the sum of its proper divisors (656304899329).

29931796961279 is a wasteful number, since it uses less digits than its factorization.

29931796961279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405378285.

The product of its digits is 1249949232, while the sum is 80.

The spelling of 29931796961279 in words is "twenty-nine trillion, nine hundred thirty-one billion, seven hundred ninety-six million, nine hundred sixty-one thousand, two hundred seventy-nine".