29997974753911 has 4 divisors (see below), whose sum is σ = 30002262023272. Its totient is φ = 29993687484552.

The previous prime is 29997974753819. The next prime is 29997974753939. The reversal of 29997974753911 is 11935747979992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29997974753911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29997974751911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143624185 + ... + 2143638178.

It is an arithmetic number, because the mean of its divisors is an integer number (7500565505818).

Almost surely, 2^{29997974753911} is an apocalyptic number.

29997974753911 is a deficient number, since it is larger than the sum of its proper divisors (4287269361).

29997974753911 is an equidigital number, since it uses as much as digits as its factorization.

29997974753911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287269360.

The product of its digits is 2430456840, while the sum is 82.

The spelling of 29997974753911 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seven hundred fifty-three thousand, nine hundred eleven".