6777997443 has 48 divisors (see below), whose sum is σ = 11717521920. Its totient is φ = 3691429632.

The previous prime is 6777997441. The next prime is 6777997453. The reversal of 6777997443 is 3447997776.

It is not a de Polignac number, because 6777997443 - 2¹ = 6777997441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6777997441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401803 + ... + 418331.

It is an arithmetic number, because the mean of its divisors is an integer number (244115040).

Almost surely, 2^6777997443 is an apocalyptic number.

6777997443 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6777997443 is a deficient number, since it is larger than the sum of its proper divisors (4939524477).

6777997443 is a wasteful number, since it uses less digits than its factorization.

6777997443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848 (or 16845 counting only the distinct ones).

The product of its digits is 56010528, while the sum is 63.

The square root of 6777997443 is about 82328.5943217786. The cubic root of 6777997443 is about 1892.4909014789.

The spelling of 6777997443 in words is "six billion, seven hundred seventy-seven million, nine hundred ninety-seven thousand, four hundred forty-three".