6681013045 has 12 divisors (see below), whose sum is σ = 9326149164. Its totient is φ = 4581265920.

The previous prime is 6681013043. The next prime is 6681013049. The reversal of 6681013045 is 5403101866.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4822885809 + 1858127236 = 69447^2 + 43106^2 .

It is not a de Polignac number, because 6681013045 - 2¹ = 6681013043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6681013045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681013043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13634476 + ... + 13634965.

It is an arithmetic number, because the mean of its divisors is an integer number (777179097).

Almost surely, 2^6681013045 is an apocalyptic number.

It is an amenable number.

6681013045 is a deficient number, since it is larger than the sum of its proper divisors (2645136119).

6681013045 is a wasteful number, since it uses less digits than its factorization.

6681013045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27269460 (or 27269453 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 6681013045 is about 81737.4641458860. The cubic root of 6681013045 is about 1883.4211363943.

The spelling of 6681013045 in words is "six billion, six hundred eighty-one million, thirteen thousand, forty-five".