29997974079923 has 2 divisors, whose sum is σ = 29997974079924. Its totient is φ = 29997974079922.

The previous prime is 29997974079883. The next prime is 29997974079959. The reversal of 29997974079923 is 32997047979992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29997974079923 - 2¹⁶ = 29997974014387 is a prime.

It is not a weakly prime, because it can be changed into another prime (29997974079023) 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, 14998987039961 + 14998987039962.

It is an arithmetic number, because the mean of its divisors is an integer number (14998987039962).

Almost surely, 2^{29997974079923} is an apocalyptic number.

29997974079923 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997974079923 is an equidigital number, since it uses as much as digits as its factorization.

29997974079923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8749644624, while the sum is 86.

The spelling of 29997974079923 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seventy-nine thousand, nine hundred twenty-three".