9797557980 has 96 divisors (see below), whose sum is σ = 33196455936. Its totient is φ = 2107708416.

The previous prime is 9797557951. The next prime is 9797557981. The reversal of 9797557980 is 897557979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9797557981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 678964 + ... + 693243.

It is an arithmetic number, because the mean of its divisors is an integer number (345796416).

Almost surely, 2^9797557980 is an apocalyptic number.

It is an amenable number.

9797557980 is an abundant number, since it is smaller than the sum of its proper divisors (23398897956).

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

9797557980 is a wasteful number, since it uses less digits than its factorization.

9797557980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372243 (or 1372241 counting only the distinct ones).

The product of its (nonzero) digits is 50009400, while the sum is 66.

The square root of 9797557980 is about 98982.6145340686. The cubic root of 9797557980 is about 2139.7971959674.

The spelling of 9797557980 in words is "nine billion, seven hundred ninety-seven million, five hundred fifty-seven thousand, nine hundred eighty".