2591493450991 has 8 divisors (see below), whose sum is σ = 2593276171200. Its totient is φ = 2589711303168.

The previous prime is 2591493450929. The next prime is 2591493451007. The reversal of 2591493450991 is 1990543941952.

2591493450991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2591493450991 - 2²⁵ = 2591459896559 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 (2591493450911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9120135 + ... + 9399991.

It is an arithmetic number, because the mean of its divisors is an integer number (324159521400).

Almost surely, 2^{2591493450991} is an apocalyptic number.

2591493450991 is a deficient number, since it is larger than the sum of its proper divisors (1782720209).

2591493450991 is a wasteful number, since it uses less digits than its factorization.

2591493450991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286193.

The product of its (nonzero) digits is 15746400, while the sum is 61.

The spelling of 2591493450991 in words is "two trillion, five hundred ninety-one billion, four hundred ninety-three million, four hundred fifty thousand, nine hundred ninety-one".