2591009663 has 6 divisors (see below), whose sum is σ = 2847969432. Its totient is φ = 2355463220.

The previous prime is 2591009633. The next prime is 2591009699. The reversal of 2591009663 is 3669001952.

It is not a de Polignac number, because 2591009663 - 2¹⁶ = 2590944127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2591009663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591009633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10706531 + ... + 10706772.

It is an arithmetic number, because the mean of its divisors is an integer number (474661572).

Almost surely, 2^2591009663 is an apocalyptic number.

2591009663 is a deficient number, since it is larger than the sum of its proper divisors (256959769).

2591009663 is a wasteful number, since it uses less digits than its factorization.

2591009663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21413325 (or 21413314 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 2591009663 is about 50901.9612883433. The cubic root of 2591009663 is about 1373.4821223480.

The spelling of 2591009663 in words is "two billion, five hundred ninety-one million, nine thousand, six hundred sixty-three".