29980693817 has 2 divisors, whose sum is σ = 29980693818. Its totient is φ = 29980693816.

The previous prime is 29980693793. The next prime is 29980693819. The reversal of 29980693817 is 71839608992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26459576896 + 3521116921 = 162664^2 + 59339^2 .

It is a cyclic number.

It is not a de Polignac number, because 29980693817 - 2¹⁶ = 29980628281 is a prime.

Together with 29980693819, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29980693817.

It is not a weakly prime, because it can be changed into another prime (29980693819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14990346908 + 14990346909.

It is an arithmetic number, because the mean of its divisors is an integer number (14990346909).

Almost surely, 2^29980693817 is an apocalyptic number.

It is an amenable number.

29980693817 is a deficient number, since it is larger than the sum of its proper divisors (1).

29980693817 is an equidigital number, since it uses as much as digits as its factorization.

29980693817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 29980693817 in words is "twenty-nine billion, nine hundred eighty million, six hundred ninety-three thousand, eight hundred seventeen".