29997979847371 has 4 divisors (see below), whose sum is σ = 29998003378000. Its totient is φ = 29997956316744.

The previous prime is 29997979847317. The next prime is 29997979847387. The reversal of 29997979847371 is 17374897979992.

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

It is a cyclic number.

It is not a de Polignac number, because 29997979847371 - 2¹⁹ = 29997979323083 is a prime.

It is a super-2 number, since 2×29997979847371² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29997979842371) 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, 9736416 + ... + 12441613.

It is an arithmetic number, because the mean of its divisors is an integer number (7499500844500).

Almost surely, 2^{29997979847371} is an apocalyptic number.

29997979847371 is a deficient number, since it is larger than the sum of its proper divisors (23530629).

29997979847371 is a wasteful number, since it uses less digits than its factorization.

29997979847371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23530628.

The product of its digits is 27221116608, while the sum is 91.

The spelling of 29997979847371 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-nine million, eight hundred forty-seven thousand, three hundred seventy-one".