997914328322 has 6 divisors (see below), whose sum is σ = 1496873611593. Its totient is φ = 498956457792.

The previous prime is 997914328319. The next prime is 997914328337. The reversal of 997914328322 is 223823419799.

It can be written as a sum of positive squares in 2 ways, for example, as 997423661521 + 490666801 = 998711^2 + 22151^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=706369.

It is a super-2 number, since 2×997914328322² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1059554 + ... + 1765922.

Almost surely, 2^997914328322 is an apocalyptic number.

997914328322 is a deficient number, since it is larger than the sum of its proper divisors (498959283271).

997914328322 is an frugal number, since it uses more digits than its factorization.

997914328322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412740 (or 706371 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 59.

The spelling of 997914328322 in words is "nine hundred ninety-seven billion, nine hundred fourteen million, three hundred twenty-eight thousand, three hundred twenty-two".