6981537735226 has 8 divisors (see below), whose sum is σ = 10539009193140. Its totient is φ = 3468534670848.

The previous prime is 6981537735223. The next prime is 6981537735233. The reversal of 6981537735226 is 6225377351896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6599755862001 + 381781873225 = 2568999^2 + 617885^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6981537735223) 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, 11117097991 + ... + 11117098618.

Almost surely, 2^{6981537735226} is an apocalyptic number.

6981537735226 is a deficient number, since it is larger than the sum of its proper divisors (3557471457914).

6981537735226 is a wasteful number, since it uses less digits than its factorization.

6981537735226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22234196768.

The product of its digits is 114307200, while the sum is 64.

The spelling of 6981537735226 in words is "six trillion, nine hundred eighty-one billion, five hundred thirty-seven million, seven hundred thirty-five thousand, two hundred twenty-six".