2591166270 has 128 divisors (see below), whose sum is σ = 7769613312. Its totient is φ = 537292800.

The previous prime is 2591166247. The next prime is 2591166289. The reversal of 2591166270 is 726611952.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1526062 + ... + 1527758.

It is an arithmetic number, because the mean of its divisors is an integer number (60700104).

Almost surely, 2^2591166270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2591166270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3884806656).

2591166270 is an abundant number, since it is smaller than the sum of its proper divisors (5178447042).

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

2591166270 is a wasteful number, since it uses less digits than its factorization.

2591166270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 2591166270 is about 50903.4995849991. The cubic root of 2591166270 is about 1373.5097940036.

It can be divided in two parts, 2591 and 166270, that added together give a palindrome (168861).

The spelling of 2591166270 in words is "two billion, five hundred ninety-one million, one hundred sixty-six thousand, two hundred seventy".