29971196641 has 2 divisors, whose sum is σ = 29971196642. Its totient is φ = 29971196640.

The previous prime is 29971196627. The next prime is 29971196653. The reversal of 29971196641 is 14669117992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29865024225 + 106172416 = 172815^2 + 10304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29971196641 is a prime.

It is not a weakly prime, because it can be changed into another prime (29971136641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14985598320 + 14985598321.

It is an arithmetic number, because the mean of its divisors is an integer number (14985598321).

Almost surely, 2^29971196641 is an apocalyptic number.

It is an amenable number.

29971196641 is a deficient number, since it is larger than the sum of its proper divisors (1).

29971196641 is an equidigital number, since it uses as much as digits as its factorization.

29971196641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 55.

The spelling of 29971196641 in words is "twenty-nine billion, nine hundred seventy-one million, one hundred ninety-six thousand, six hundred forty-one".