9797071885 has 16 divisors (see below), whose sum is σ = 12167515440. Its totient is φ = 7563888640.

The previous prime is 9797071871. The next prime is 9797071901. The reversal of 9797071885 is 5881707979.

It can be written as a sum of positive squares in 8 ways, for example, as 179935396 + 9617136489 = 13414^2 + 98067^2 .

It is not a de Polignac number, because 9797071885 - 2⁵ = 9797071853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323805 + ... + 352765.

It is an arithmetic number, because the mean of its divisors is an integer number (760469715).

Almost surely, 2^9797071885 is an apocalyptic number.

It is an amenable number.

9797071885 is a deficient number, since it is larger than the sum of its proper divisors (2370443555).

9797071885 is a wasteful number, since it uses less digits than its factorization.

9797071885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31328.

The product of its (nonzero) digits is 8890560, while the sum is 61.

The square root of 9797071885 is about 98980.1590471545. The cubic root of 9797071885 is about 2139.7618074920.

The spelling of 9797071885 in words is "nine billion, seven hundred ninety-seven million, seventy-one thousand, eight hundred eighty-five".