29997974071738 has 16 divisors (see below), whose sum is σ = 45108560511360. Its totient is φ = 14961789808416.

The previous prime is 29997974071679. The next prime is 29997974071739. The reversal of 29997974071738 is 83717047979992.

It is not an unprimeable number, because it can be changed into a prime (29997974071739) 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 in 7 ways as a sum of consecutive naturals, for example, 23229945 + ... + 24487267.

It is an arithmetic number, because the mean of its divisors is an integer number (2819285031960).

Almost surely, 2^{29997974071738} is an apocalyptic number.

29997974071738 is a deficient number, since it is larger than the sum of its proper divisors (15110586439622).

29997974071738 is a wasteful number, since it uses less digits than its factorization.

29997974071738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286901.

The product of its (nonzero) digits is 3024568512, while the sum is 82.

The spelling of 29997974071738 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seventy-one thousand, seven hundred thirty-eight".