29997928972449 has 80 divisors (see below), whose sum is σ = 47397879316480. Its totient is φ = 18854683722720.

The previous prime is 29997928972409. The next prime is 29997928972469. The reversal of 29997928972449 is 94427982979992.

29997928972449 is a `hidden beast` number, since 2 + 9 + 9 + 9 + 7 + 92 + 8 + 9 + 72 + 449 = 666.

It is not a de Polignac number, because 29997928972449 - 2²⁵ = 29997895418017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29997928972409) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1134939264 + ... + 1134965694.

It is an arithmetic number, because the mean of its divisors is an integer number (592473491456).

Almost surely, 2^{29997928972449} is an apocalyptic number.

It is an amenable number.

29997928972449 is a deficient number, since it is larger than the sum of its proper divisors (17399950344031).

29997928972449 is a wasteful number, since it uses less digits than its factorization.

29997928972449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29992 (or 29983 counting only the distinct ones).

The product of its digits is 26665583616, while the sum is 90.

The spelling of 29997928972449 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred twenty-eight million, nine hundred seventy-two thousand, four hundred forty-nine".