29997974079071 has 4 divisors (see below), whose sum is σ = 30000564813000. Its totient is φ = 29995383345144.

The previous prime is 29997974079023. The next prime is 29997974079167. The reversal of 29997974079071 is 17097047979992.

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-29997974079071 is a prime.

It is a super-2 number, since 2×29997974079071² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29997974079371) 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, 1295349596 + ... + 1295372753.

It is an arithmetic number, because the mean of its divisors is an integer number (7500141203250).

Almost surely, 2^{29997974079071} is an apocalyptic number.

29997974079071 is a deficient number, since it is larger than the sum of its proper divisors (2590733929).

29997974079071 is a wasteful number, since it uses less digits than its factorization.

29997974079071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590733928.

The product of its (nonzero) digits is 1134213192, while the sum is 80.

The spelling of 29997974079071 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seventy-nine thousand, seventy-one".