6778045443851 has 16 divisors (see below), whose sum is σ = 7737313302528. Its totient is φ = 5881403649600.

The previous prime is 6778045443817. The next prime is 6778045443887. The reversal of 6778045443851 is 1583445408776.

It is a cyclic number.

It is not a de Polignac number, because 6778045443851 - 2¹⁴ = 6778045427467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6778045442851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136118711 + ... + 136168496.

It is an arithmetic number, because the mean of its divisors is an integer number (483582081408).

Almost surely, 2^{6778045443851} is an apocalyptic number.

6778045443851 is a deficient number, since it is larger than the sum of its proper divisors (959267858677).

6778045443851 is a wasteful number, since it uses less digits than its factorization.

6778045443851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272287322.

The product of its (nonzero) digits is 90316800, while the sum is 62.

The spelling of 6778045443851 in words is "six trillion, seven hundred seventy-eight billion, forty-five million, four hundred forty-three thousand, eight hundred fifty-one".