2591260864 has 28 divisors (see below), whose sum is σ = 5144707008. Its totient is φ = 1294956800.

The previous prime is 2591260811. The next prime is 2591260927. The reversal of 2591260864 is 4680621952.

It is a self number, because there is not a number n which added to its sum of digits gives 2591260864.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127569 + ... + 146479.

It is an arithmetic number, because the mean of its divisors is an integer number (183739536).

Almost surely, 2^2591260864 is an apocalyptic number.

It is an amenable number.

2591260864 is a deficient number, since it is larger than the sum of its proper divisors (2553446144).

2591260864 is a wasteful number, since it uses less digits than its factorization.

2591260864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21064 (or 21054 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 2591260864 is about 50904.4287267817. The cubic root of 2591260864 is about 1373.5265077393.

The spelling of 2591260864 in words is "two billion, five hundred ninety-one million, two hundred sixty thousand, eight hundred sixty-four".