6992271681 has 16 divisors (see below), whose sum is σ = 10130288640. Its totient is φ = 4273713360.

The previous prime is 6992271679. The next prime is 6992271697. The reversal of 6992271681 is 1861722996.

It is not a de Polignac number, because 6992271681 - 2¹ = 6992271679 is a prime.

It is a super-2 number, since 2×6992271681² = 97783726521829131522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6992271641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1976805 + ... + 1980338.

It is an arithmetic number, because the mean of its divisors is an integer number (633143040).

Almost surely, 2^6992271681 is an apocalyptic number.

It is an amenable number.

6992271681 is a deficient number, since it is larger than the sum of its proper divisors (3138016959).

6992271681 is a wasteful number, since it uses less digits than its factorization.

6992271681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957196.

The product of its digits is 653184, while the sum is 51.

The square root of 6992271681 is about 83619.8043587762. The cubic root of 6992271681 is about 1912.2269358016.

The spelling of 6992271681 in words is "six billion, nine hundred ninety-two million, two hundred seventy-one thousand, six hundred eighty-one".