6740367376781 has 4 divisors (see below), whose sum is σ = 6740423965632. Its totient is φ = 6740310787932.

The previous prime is 6740367376777. The next prime is 6740367376823. The reversal of 6740367376781 is 1876737630476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6740367376781 - 2² = 6740367376777 is a prime.

It is a super-2 number, since 2×6740367376781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6740367373781) 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 3 ways as a sum of consecutive naturals, for example, 28115381 + ... + 28354106.

It is an arithmetic number, because the mean of its divisors is an integer number (1685105991408).

Almost surely, 2^{6740367376781} is an apocalyptic number.

It is an amenable number.

6740367376781 is a deficient number, since it is larger than the sum of its proper divisors (56588851).

6740367376781 is a wasteful number, since it uses less digits than its factorization.

6740367376781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56588850.

The product of its (nonzero) digits is 149361408, while the sum is 65.

The spelling of 6740367376781 in words is "six trillion, seven hundred forty billion, three hundred sixty-seven million, three hundred seventy-six thousand, seven hundred eighty-one".