9991232676 has 36 divisors (see below), whose sum is σ = 25275509532. Its totient is φ = 3327787584.

The previous prime is 9991232663. The next prime is 9991232681. The reversal of 9991232676 is 6762321999.

It can be written as a sum of positive squares in 2 ways, for example, as 7689536100 + 2301696576 = 87690^2 + 47976^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62695 + ... + 154638.

It is an arithmetic number, because the mean of its divisors is an integer number (702097487).

Almost surely, 2^9991232676 is an apocalyptic number.

It is an amenable number.

9991232676 is an abundant number, since it is smaller than the sum of its proper divisors (15284276856).

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

9991232676 is a wasteful number, since it uses less digits than its factorization.

9991232676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218620 (or 218615 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 9991232676 is about 99956.1537675395. The cubic root of 9991232676 is about 2153.8048850404.

The spelling of 9991232676 in words is "nine billion, nine hundred ninety-one million, two hundred thirty-two thousand, six hundred seventy-six".