2681126613 has 48 divisors (see below), whose sum is σ = 4457756160. Its totient is φ = 1535738400.

The previous prime is 2681126447. The next prime is 2681126621. The reversal of 2681126613 is 3166211862.

It is a happy number.

2681126613 is a `hidden beast` number, since 2 + 6 + 8 + 11 + 26 + 613 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2681126613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681126633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 922120 + ... + 925022.

It is an arithmetic number, because the mean of its divisors is an integer number (92869920).

Almost surely, 2^2681126613 is an apocalyptic number.

It is an amenable number.

2681126613 is a deficient number, since it is larger than the sum of its proper divisors (1776629547).

2681126613 is a wasteful number, since it uses less digits than its factorization.

2681126613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430 (or 3427 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2681126613 is about 51779.5964932134. The cubic root of 2681126613 is about 1389.2245235373.

The spelling of 2681126613 in words is "two billion, six hundred eighty-one million, one hundred twenty-six thousand, six hundred thirteen".