29997974695813 has 2 divisors, whose sum is σ = 29997974695814. Its totient is φ = 29997974695812.

The previous prime is 29997974695757. The next prime is 29997974695823. The reversal of 29997974695813 is 31859647979992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26107368354369 + 3890606341444 = 5109537^2 + 1972462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29997974695813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29997974695823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998987347906 + 14998987347907.

It is an arithmetic number, because the mean of its divisors is an integer number (14998987347907).

Almost surely, 2^{29997974695813} is an apocalyptic number.

It is an amenable number.

29997974695813 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997974695813 is an equidigital number, since it uses as much as digits as its factorization.

29997974695813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16665989760, while the sum is 88.

The spelling of 29997974695813 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, six hundred ninety-five thousand, eight hundred thirteen".