6981141679 has 4 divisors (see below), whose sum is σ = 6983836576. Its totient is φ = 6978446784.

The previous prime is 6981141659. The next prime is 6981141737. The reversal of 6981141679 is 9761411896.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6981141679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981141619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343559 + ... + 1348744.

It is an arithmetic number, because the mean of its divisors is an integer number (1745959144).

Almost surely, 2^6981141679 is an apocalyptic number.

6981141679 is a deficient number, since it is larger than the sum of its proper divisors (2694897).

6981141679 is a wasteful number, since it uses less digits than its factorization.

6981141679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694896.

The product of its digits is 653184, while the sum is 52.

The square root of 6981141679 is about 83553.2266223154. The cubic root of 6981141679 is about 1911.2117963688.

The spelling of 6981141679 in words is "six billion, nine hundred eighty-one million, one hundred forty-one thousand, six hundred seventy-nine".