29997974072320 has 88 divisors (see below), whose sum is σ = 71964698724144. Its totient is φ = 11998403444736.

The previous prime is 29997974072309. The next prime is 29997974072327. The reversal of 29997974072320 is 2327047979992.

It is a self number, because there is not a number n which added to its sum of digits gives 29997974072320.

It is not an unprimeable number, because it can be changed into a prime (29997974072327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81341782 + ... + 81709738.

Almost surely, 2^{29997974072320} is an apocalyptic number.

29997974072320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29997974072320 is an abundant number, since it is smaller than the sum of its proper divisors (41966724651824).

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

29997974072320 is a wasteful number, since it uses less digits than its factorization.

29997974072320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383905 (or 383887 counting only the distinct ones).

The product of its (nonzero) digits is 216040608, while the sum is 70.

The spelling of 29997974072320 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seventy-two thousand, three hundred twenty".