29997506889480 has 256 divisors, whose sum is σ = 97392299397120. Its totient is φ = 7347710278656.

The previous prime is 29997506889479. The next prime is 29997506889521. The reversal of 29997506889480 is 8498860579992.

It is a junction number, because it is equal to n+sod(n) for n = 29997506889393 and 29997506889402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 320909229 + ... + 321002691.

It is an arithmetic number, because the mean of its divisors is an integer number (380438669520).

Almost surely, 2^{29997506889480} is an apocalyptic number.

29997506889480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29997506889480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48696149698560).

29997506889480 is an abundant number, since it is smaller than the sum of its proper divisors (67394792507640).

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

29997506889480 is a wasteful number, since it uses less digits than its factorization.

29997506889480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94500 (or 94496 counting only the distinct ones).

The product of its (nonzero) digits is 5643509760, while the sum is 84.

The spelling of 29997506889480 in words is "twenty-nine trillion, nine hundred ninety-seven billion, five hundred six million, eight hundred eighty-nine thousand, four hundred eighty".