9941561868 has 24 divisors (see below), whose sum is σ = 26510831872. Its totient is φ = 2840446224.

The previous prime is 9941561821. The next prime is 9941561887. The reversal of 9941561868 is 8681651499.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59175880 + ... + 59176047.

Almost surely, 2^9941561868 is an apocalyptic number.

It is an amenable number.

9941561868 is an abundant number, since it is smaller than the sum of its proper divisors (16569270004).

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

9941561868 is a wasteful number, since it uses less digits than its factorization.

9941561868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118351941 (or 118351939 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The square root of 9941561868 is about 99707.3812112223. The cubic root of 9941561868 is about 2150.2297838416.

The spelling of 9941561868 in words is "nine billion, nine hundred forty-one million, five hundred sixty-one thousand, eight hundred sixty-eight".