6895778743 has 4 divisors (see below), whose sum is σ = 7880890000. Its totient is φ = 5910667488.

The previous prime is 6895778719. The next prime is 6895778753. The reversal of 6895778743 is 3478775986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6895778743 - 2²¹ = 6893681591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6895778753) 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, 492555618 + ... + 492555631.

It is an arithmetic number, because the mean of its divisors is an integer number (1970222500).

Almost surely, 2^6895778743 is an apocalyptic number.

6895778743 is a deficient number, since it is larger than the sum of its proper divisors (985111257).

6895778743 is an equidigital number, since it uses as much as digits as its factorization.

6895778743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985111256.

The product of its digits is 71124480, while the sum is 64.

The square root of 6895778743 is about 83040.8257605860. The cubic root of 6895778743 is about 1903.3899539109.

The spelling of 6895778743 in words is "six billion, eight hundred ninety-five million, seven hundred seventy-eight thousand, seven hundred forty-three".