6780741981 has 32 divisors (see below), whose sum is σ = 10097982720. Its totient is φ = 4018560000.

The previous prime is 6780741967. The next prime is 6780742013. The reversal of 6780741981 is 1891470876.

It is not a de Polignac number, because 6780741981 - 2⁵ = 6780741949 is a prime.

It is a super-2 number, since 2×6780741981² = 91956923625791608722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780741181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446056 + ... + 461006.

It is an arithmetic number, because the mean of its divisors is an integer number (315561960).

Almost surely, 2^6780741981 is an apocalyptic number.

It is an amenable number.

6780741981 is a deficient number, since it is larger than the sum of its proper divisors (3317240739).

6780741981 is a wasteful number, since it uses less digits than its factorization.

6780741981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15397.

The product of its (nonzero) digits is 677376, while the sum is 51.

The square root of 6780741981 is about 82345.2608290240. The cubic root of 6780741981 is about 1892.7463020032.

The spelling of 6780741981 in words is "six billion, seven hundred eighty million, seven hundred forty-one thousand, nine hundred eighty-one".