97709405922 has 90 divisors (see below), whose sum is σ = 224786996049. Its totient is φ = 31722369120.

The previous prime is 97709405891. The next prime is 97709405953. The reversal of 97709405922 is 22950490779.

97709405922 is a `hidden beast` number, since 9 + 7 + 7 + 0 + 9 + 40 + 592 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (97709405891) and next prime (97709405953).

It can be written as a sum of positive squares in 2 ways, for example, as 69779977281 + 27929428641 = 264159^2 + 167121^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=221031.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 163120579 + ... + 163121177.

Almost surely, 2^97709405922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97709405922

97709405922 is an abundant number, since it is smaller than the sum of its proper divisors (127077590127).

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

97709405922 is an frugal number, since it uses more digits than its factorization.

97709405922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 97709405922 in words is "ninety-seven billion, seven hundred nine million, four hundred five thousand, nine hundred twenty-two".