997622930880 has 336 divisors, whose sum is σ = 3681211453920. Its totient is φ = 256858656768.

The previous prime is 997622930867. The next prime is 997622930947. The reversal of 997622930880 is 88039226799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2033842 + ... + 2476238.

It is an arithmetic number, because the mean of its divisors is an integer number (10955986470).

Almost surely, 2^997622930880 is an apocalyptic number.

997622930880 is a gapful number since it is divisible by the number (90) 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 997622930880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840605726960).

997622930880 is an abundant number, since it is smaller than the sum of its proper divisors (2683588523040).

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

997622930880 is a wasteful number, since it uses less digits than its factorization.

997622930880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442458 (or 442436 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 997622930880 in words is "nine hundred ninety-seven billion, six hundred twenty-two million, nine hundred thirty thousand, eight hundred eighty".