997009131732 has 48 divisors (see below), whose sum is σ = 2448922613760. Its totient is φ = 314828499168.

The previous prime is 997009131719. The next prime is 997009131863. The reversal of 997009131732 is 237131900799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4689243 + ... + 4897245.

It is an arithmetic number, because the mean of its divisors is an integer number (51019221120).

Almost surely, 2^997009131732 is an apocalyptic number.

It is an amenable number.

997009131732 is an abundant number, since it is smaller than the sum of its proper divisors (1451913482028).

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

997009131732 is a wasteful number, since it uses less digits than its factorization.

997009131732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229052 (or 229050 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 51.

The spelling of 997009131732 in words is "nine hundred ninety-seven billion, nine million, one hundred thirty-one thousand, seven hundred thirty-two".