29997974695823 has 2 divisors, whose sum is σ = 29997974695824. Its totient is φ = 29997974695822.

The previous prime is 29997974695813. The next prime is 29997974695853. The reversal of 29997974695823 is 32859647979992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29997974695823 - 2²⁰ = 29997973647247 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29997974695813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998987347911 + 14998987347912.

It is an arithmetic number, because the mean of its divisors is an integer number (14998987347912).

Almost surely, 2^{29997974695823} is an apocalyptic number.

29997974695823 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997974695823 is an equidigital number, since it uses as much as digits as its factorization.

29997974695823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33331979520, while the sum is 89.

The spelling of 29997974695823 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, six hundred ninety-five thousand, eight hundred twenty-three".