6756765887681 has 4 divisors (see below), whose sum is σ = 6757466588592. Its totient is φ = 6756065186772.

The previous prime is 6756765887653. The next prime is 6756765887719. The reversal of 6756765887681 is 1867885676576.

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 6756765887681 - 2¹⁸ = 6756765625537 is a prime.

It is a super-2 number, since 2×6756765887681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6756765887596 and 6756765887605.

It is not an unprimeable number, because it can be changed into a prime (6756765887621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350335991 + ... + 350355276.

It is an arithmetic number, because the mean of its divisors is an integer number (1689366647148).

Almost surely, 2^{6756765887681} is an apocalyptic number.

It is an amenable number.

6756765887681 is a deficient number, since it is larger than the sum of its proper divisors (700700911).

6756765887681 is an equidigital number, since it uses as much as digits as its factorization.

6756765887681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700700910.

The product of its digits is 5689958400, while the sum is 80.

The spelling of 6756765887681 in words is "six trillion, seven hundred fifty-six billion, seven hundred sixty-five million, eight hundred eighty-seven thousand, six hundred eighty-one".