997948234322 has 54 divisors (see below), whose sum is σ = 1647513249669. Its totient is φ = 453157539120.

The previous prime is 997948234307. The next prime is 997948234333. The reversal of 997948234322 is 223432849799.

It can be written as a sum of positive squares in 2 ways, for example, as 853275265441 + 144672968881 = 923729^2 + 380359^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=706381.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1230515297 + ... + 1230516107.

Almost surely, 2^997948234322 is an apocalyptic number.

997948234322 is a deficient number, since it is larger than the sum of its proper divisors (649565015347).

997948234322 is an frugal number, since it uses more digits than its factorization.

997948234322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 893 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 62.

The spelling of 997948234322 in words is "nine hundred ninety-seven billion, nine hundred forty-eight million, two hundred thirty-four thousand, three hundred twenty-two".