8491122432 has 270 divisors, whose sum is σ = 27427736952. Its totient is φ = 2611574784.

The previous prime is 8491122407. The next prime is 8491122463. The reversal of 8491122432 is 2342211948.

8491122432 is a `hidden beast` number, since 8 + 491 + 122 + 43 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3503173 + ... + 3505595.

Almost surely, 2^8491122432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8491122432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13713868476).

8491122432 is an abundant number, since it is smaller than the sum of its proper divisors (18936614520).

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

8491122432 is a wasteful number, since it uses less digits than its factorization.

8491122432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 2441 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8491122432 is about 92147.2866231014. The cubic root of 8491122432 is about 2040.1168099204.

The spelling of 8491122432 in words is "eight billion, four hundred ninety-one million, one hundred twenty-two thousand, four hundred thirty-two".