97963322391 has 12 divisors (see below), whose sum is σ = 154366447560. Its totient is φ = 59371710480.

The previous prime is 97963322381. The next prime is 97963322399. The reversal of 97963322391 is 19322336979.

97963322391 is a `hidden beast` number, since 9 + 79 + 6 + 332 + 239 + 1 = 666.

It is not a de Polignac number, because 97963322391 - 2²¹ = 97961225239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97963322399) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 494764156 + ... + 494764353.

It is an arithmetic number, because the mean of its divisors is an integer number (12863870630).

Almost surely, 2^97963322391 is an apocalyptic number.

97963322391 is a deficient number, since it is larger than the sum of its proper divisors (56403125169).

97963322391 is a wasteful number, since it uses less digits than its factorization.

97963322391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989528526 (or 989528523 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 54.

The spelling of 97963322391 in words is "ninety-seven billion, nine hundred sixty-three million, three hundred twenty-two thousand, three hundred ninety-one".