2680138688 has 28 divisors (see below), whose sum is σ = 5327535192. Its totient is φ = 1337767680.

The previous prime is 2680138667. The next prime is 2680138691. The reversal of 2680138688 is 8868310862.

It is a super-2 number, since 2×2680138688² = 14366286773828722688, which contains 22 as substring.

It is a congruent number.

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, 1898 + ... + 73238.

It is an arithmetic number, because the mean of its divisors is an integer number (190269114).

Almost surely, 2^2680138688 is an apocalyptic number.

It is an amenable number.

2680138688 is a deficient number, since it is larger than the sum of its proper divisors (2647396504).

2680138688 is an equidigital number, since it uses as much as digits as its factorization.

2680138688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71940 (or 71930 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 2680138688 is about 51770.0559010708. The cubic root of 2680138688 is about 1389.0538716137.

The spelling of 2680138688 in words is "two billion, six hundred eighty million, one hundred thirty-eight thousand, six hundred eighty-eight".