97221397626 has 24 divisors (see below), whose sum is σ = 210847209300. Its totient is φ = 32376232896.

The previous prime is 97221397579. The next prime is 97221397633. The reversal of 97221397626 is 62679312279.

97221397626 is a `hidden beast` number, since 9 + 7 + 2 + 2 + 1 + 3 + 9 + 7 + 626 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67379180625 + 29842217001 = 259575^2 + 172749^2 .

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 11 ways as a sum of consecutive naturals, for example, 2555565 + ... + 2593328.

Almost surely, 2^97221397626 is an apocalyptic number.

97221397626 is an abundant number, since it is smaller than the sum of its proper divisors (113625811674).

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

97221397626 is a wasteful number, since it uses less digits than its factorization.

97221397626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149950 (or 5149947 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The spelling of 97221397626 in words is "ninety-seven billion, two hundred twenty-one million, three hundred ninety-seven thousand, six hundred twenty-six".