6931809149616 has 400 divisors, whose sum is σ = 21707157632160. Its totient is φ = 2122900254720.

The previous prime is 6931809149611. The next prime is 6931809149623. The reversal of 6931809149616 is 6169419081396.

6931809149616 is a `hidden beast` number, since 6 + 9 + 3 + 1 + 8 + 0 + 9 + 1 + 4 + 9 + 616 = 666.

It is not an unprimeable number, because it can be changed into a prime (6931809149611) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4680491596 + ... + 4680493076.

Almost surely, 2^{6931809149616} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6931809149616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10853578816080).

6931809149616 is an abundant number, since it is smaller than the sum of its proper divisors (14775348482544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6931809149616 is a wasteful number, since it uses less digits than its factorization.

6931809149616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 63.

The spelling of 6931809149616 in words is "six trillion, nine hundred thirty-one billion, eight hundred nine million, one hundred forty-nine thousand, six hundred sixteen".