6791361981 has 8 divisors (see below), whose sum is σ = 9090384384. Its totient is φ = 4509957120.

The previous prime is 6791361971. The next prime is 6791361989. The reversal of 6791361981 is 1891631976.

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

It is not a de Polignac number, because 6791361981 - 2⁷ = 6791361853 is a prime.

It is a super-2 number, since 2×6791361981² = 92245195113944488722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6791361989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4403485 + ... + 4405026.

It is an arithmetic number, because the mean of its divisors is an integer number (1136298048).

Almost surely, 2^6791361981 is an apocalyptic number.

It is an amenable number.

6791361981 is a deficient number, since it is larger than the sum of its proper divisors (2299022403).

6791361981 is a wasteful number, since it uses less digits than its factorization.

6791361981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8808771.

The product of its digits is 489888, while the sum is 51.

The square root of 6791361981 is about 82409.7201851820. The cubic root of 6791361981 is about 1893.7339265069.

The spelling of 6791361981 in words is "six billion, seven hundred ninety-one million, three hundred sixty-one thousand, nine hundred eighty-one".