29997928909913 has 2 divisors, whose sum is σ = 29997928909914. Its totient is φ = 29997928909912.

The previous prime is 29997928909889. The next prime is 29997928909919. The reversal of 29997928909913 is 31990982979992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27829707999769 + 2168220910144 = 5275387^2 + 1472488^2 .

It is a cyclic number.

It is not a de Polignac number, because 29997928909913 - 2¹⁴ = 29997928893529 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (29997928909919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998964454956 + 14998964454957.

It is an arithmetic number, because the mean of its divisors is an integer number (14998964454957).

Almost surely, 2^{29997928909913} is an apocalyptic number.

It is an amenable number.

29997928909913 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997928909913 is an equidigital number, since it uses as much as digits as its factorization.

29997928909913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3214155168, while the sum is 86.

The spelling of 29997928909913 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred twenty-eight million, nine hundred nine thousand, nine hundred thirteen".