97745840220 has 384 divisors, whose sum is σ = 340293058560. Its totient is φ = 20473896960.

The previous prime is 97745840209. The next prime is 97745840237. The reversal of 97745840220 is 2204854779.

It is a self number, because there is not a number n which added to its sum of digits gives 97745840220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30842796 + ... + 30845964.

It is an arithmetic number, because the mean of its divisors is an integer number (886179840).

Almost surely, 2^97745840220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97745840220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170146529280).

97745840220 is an abundant number, since it is smaller than the sum of its proper divisors (242547218340).

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

97745840220 is a wasteful number, since it uses less digits than its factorization.

97745840220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345 (or 3343 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 97745840220 in words is "ninety-seven billion, seven hundred forty-five million, eight hundred forty thousand, two hundred twenty".