2591134968 has 64 divisors (see below), whose sum is σ = 6884676000. Its totient is φ = 809848832.

The previous prime is 2591134963. The next prime is 2591134999. The reversal of 2591134968 is 8694311952.

2591134968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2591134968² = 13427960844784722048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591134961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97948 + ... + 121556.

Almost surely, 2^2591134968 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 2591134968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3442338000).

2591134968 is an abundant number, since it is smaller than the sum of its proper divisors (4293541032).

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

2591134968 is a wasteful number, since it uses less digits than its factorization.

2591134968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23904 (or 23900 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 2591134968 is about 50903.1921199447. The cubic root of 2591134968 is about 1373.5042631896.

The spelling of 2591134968 in words is "two billion, five hundred ninety-one million, one hundred thirty-four thousand, nine hundred sixty-eight".