6777423738 has 40 divisors (see below), whose sum is σ = 15556865940. Its totient is φ = 2204038080.

The previous prime is 6777423703. The next prime is 6777423761. The reversal of 6777423738 is 8373247776.

It can be written as a sum of positive squares in 2 ways, for example, as 6717933369 + 59490369 = 81963^2 + 7713^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 503553 + ... + 516836.

Almost surely, 2^6777423738 is an apocalyptic number.

6777423738 is an abundant number, since it is smaller than the sum of its proper divisors (8779442202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6777423738 is a wasteful number, since it uses less digits than its factorization.

6777423738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020444 (or 1020435 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 54.

The square root of 6777423738 is about 82325.1100090367. The cubic root of 6777423738 is about 1892.4375050721.

The spelling of 6777423738 in words is "six billion, seven hundred seventy-seven million, four hundred twenty-three thousand, seven hundred thirty-eight".