29997974079892 has 96 divisors (see below), whose sum is σ = 67423254861312. Its totient is φ = 11350844499456.

The previous prime is 29997974079883. The next prime is 29997974079923. The reversal of 29997974079892 is 29897047979992.

It is a Harshad number since it is a multiple of its sum of digits (91).

It is a junction number, because it is equal to n+sod(n) for n = 29997974079797 and 29997974079806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220056858 + ... + 220193134.

It is an arithmetic number, because the mean of its divisors is an integer number (702325571472).

Almost surely, 2^{29997974079892} is an apocalyptic number.

It is an amenable number.

29997974079892 is an abundant number, since it is smaller than the sum of its proper divisors (37425280781420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29997974079892 is a wasteful number, since it uses less digits than its factorization.

29997974079892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162617 (or 162615 counting only the distinct ones).

The product of its (nonzero) digits is 23332385664, while the sum is 91.

The spelling of 29997974079892 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seventy-nine thousand, eight hundred ninety-two".