997371989235 has 20 divisors (see below), whose sum is σ = 1787881640688. Its totient is φ = 531931727376.

The previous prime is 997371989227. The next prime is 997371989261. The reversal of 997371989235 is 532989173799.

It is not a de Polignac number, because 997371989235 - 2³ = 997371989227 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1231323039 + ... + 1231323848.

Almost surely, 2^997371989235 is an apocalyptic number.

997371989235 is a deficient number, since it is larger than the sum of its proper divisors (790509651453).

997371989235 is a wasteful number, since it uses less digits than its factorization.

997371989235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462646904 (or 2462646895 counting only the distinct ones).

The product of its digits is 231472080, while the sum is 72.

The spelling of 997371989235 in words is "nine hundred ninety-seven billion, three hundred seventy-one million, nine hundred eighty-nine thousand, two hundred thirty-five".