29997928910893 has 2 divisors, whose sum is σ = 29997928910894. Its totient is φ = 29997928910892.

The previous prime is 29997928910821. The next prime is 29997928910899. The reversal of 29997928910893 is 39801982979992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21446503695369 + 8551425215524 = 4631037^2 + 2924282^2 .

It is a cyclic number.

It is not a de Polignac number, because 29997928910893 - 2³³ = 29989338976301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29997928910893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29997928910899) 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, 14998964455446 + 14998964455447.

It is an arithmetic number, because the mean of its divisors is an integer number (14998964455447).

Almost surely, 2^{29997928910893} is an apocalyptic number.

It is an amenable number.

29997928910893 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997928910893 is an equidigital number, since it uses as much as digits as its factorization.

29997928910893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857026816, while the sum is 85.

The spelling of 29997928910893 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred twenty-eight million, nine hundred ten thousand, eight hundred ninety-three".