8997509483591 has 4 divisors (see below), whose sum is σ = 8997641652384. Its totient is φ = 8997377314800.

The previous prime is 8997509483581. The next prime is 8997509483663. The reversal of 8997509483591 is 1953849057998.

8997509483591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8997509483591 - 2¹⁰ = 8997509482567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997509483581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65982230 + ... + 66118451.

It is an arithmetic number, because the mean of its divisors is an integer number (2249410413096).

Almost surely, 2^{8997509483591} is an apocalyptic number.

8997509483591 is a deficient number, since it is larger than the sum of its proper divisors (132168793).

8997509483591 is a wasteful number, since it uses less digits than its factorization.

8997509483591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132168792.

The product of its (nonzero) digits is 881798400, while the sum is 77.

The spelling of 8997509483591 in words is "eight trillion, nine hundred ninety-seven billion, five hundred nine million, four hundred eighty-three thousand, five hundred ninety-one".