9798975655 has 24 divisors (see below), whose sum is σ = 13682974032. Its totient is φ = 6717134592.

The previous prime is 9798975607. The next prime is 9798975707. The reversal of 9798975655 is 5565798979.

It is not a de Polignac number, because 9798975655 - 2²¹ = 9796878503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1278264 + ... + 1285906.

It is an arithmetic number, because the mean of its divisors is an integer number (570123918).

Almost surely, 2^9798975655 is an apocalyptic number.

9798975655 is a deficient number, since it is larger than the sum of its proper divisors (3883998377).

9798975655 is a wasteful number, since it uses less digits than its factorization.

9798975655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12895 (or 12888 counting only the distinct ones).

The product of its digits is 214326000, while the sum is 70.

The square root of 9798975655 is about 98989.7755073725. The cubic root of 9798975655 is about 2139.9003982379.

The spelling of 9798975655 in words is "nine billion, seven hundred ninety-eight million, nine hundred seventy-five thousand, six hundred fifty-five".