9971111799 has 32 divisors (see below), whose sum is σ = 16281108480. Its totient is φ = 5980780800.

The previous prime is 9971111797. The next prime is 9971111831.

9971111799 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9971111799 - 2¹ = 9971111797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971111797) 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, 144247 + ... + 201864.

It is an arithmetic number, because the mean of its divisors is an integer number (508784640).

Almost surely, 2^9971111799 is an apocalyptic number.

9971111799 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9971111799 is a deficient number, since it is larger than the sum of its proper divisors (6309996681).

9971111799 is a wasteful number, since it uses less digits than its factorization.

9971111799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346228 (or 346222 counting only the distinct ones).

The product of its digits is 321489, while the sum is 54.

The square root of 9971111799 is about 99855.4545280327. The cubic root of 9971111799 is about 2152.3580977002.

The spelling of 9971111799 in words is "nine billion, nine hundred seventy-one million, one hundred eleven thousand, seven hundred ninety-nine".