2680021103929 has 9 divisors (see below), whose sum is σ = 2902057731693. Its totient is φ = 2473845989472.

The previous prime is 2680021103911. The next prime is 2680021103971. The reversal of 2680021103929 is 9293011200862.

The square root of 2680021103929 is 1637077.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 52548685225 + 2627472418704 = 229235^2 + 1620948^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2680021103929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680021103989) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21219037 + ... + 21344965.

It is an arithmetic number, because the mean of its divisors is an integer number (322450859077).

Almost surely, 2^{2680021103929} is an apocalyptic number.

2680021103929 is the 1637077-th square number.

2680021103929 is the 818539-th centered octagonal number.

It is an amenable number.

2680021103929 is a deficient number, since it is larger than the sum of its proper divisors (222036627764).

2680021103929 is an frugal number, since it uses more digits than its factorization.

2680021103929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251884 (or 125942 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 2680021103929 in words is "two trillion, six hundred eighty billion, twenty-one million, one hundred three thousand, nine hundred twenty-nine".