29912645393 has 2 divisors, whose sum is σ = 29912645394. Its totient is φ = 29912645392.

The previous prime is 29912645369. The next prime is 29912645489. The reversal of 29912645393 is 39354621992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29112208129 + 800437264 = 170623^2 + 28292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29912645393 is a prime.

It is not a weakly prime, because it can be changed into another prime (29912645303) 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 as a sum of consecutive naturals, namely, 14956322696 + 14956322697.

It is an arithmetic number, because the mean of its divisors is an integer number (14956322697).

Almost surely, 2^29912645393 is an apocalyptic number.

It is an amenable number.

29912645393 is a deficient number, since it is larger than the sum of its proper divisors (1).

29912645393 is an equidigital number, since it uses as much as digits as its factorization.

29912645393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 53.

The spelling of 29912645393 in words is "twenty-nine billion, nine hundred twelve million, six hundred forty-five thousand, three hundred ninety-three".