2681657539 has 16 divisors (see below), whose sum is σ = 2998067040. Its totient is φ = 2397832800.

The previous prime is 2681657519. The next prime is 2681657597. The reversal of 2681657539 is 9357561862.

It is not a de Polignac number, because 2681657539 - 2⁵ = 2681657507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2681657509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64677 + ... + 97705.

It is an arithmetic number, because the mean of its divisors is an integer number (187379190).

Almost surely, 2^2681657539 is an apocalyptic number.

2681657539 is a deficient number, since it is larger than the sum of its proper divisors (316409501).

2681657539 is an equidigital number, since it uses as much as digits as its factorization.

2681657539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33123 (or 33101 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 52.

The square root of 2681657539 is about 51784.7230271631. The cubic root of 2681657539 is about 1389.3162171728.

The spelling of 2681657539 in words is "two billion, six hundred eighty-one million, six hundred fifty-seven thousand, five hundred thirty-nine".