6777957888 has 120 divisors (see below), whose sum is σ = 21066573528. Its totient is φ = 2085507072.

The previous prime is 6777957881. The next prime is 6777957911. The reversal of 6777957888 is 8887597776.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6777957881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3331 + ... + 116477.

Almost surely, 2^6777957888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6777957888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10533286764).

6777957888 is an abundant number, since it is smaller than the sum of its proper divisors (14288615640).

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

6777957888 is a wasteful number, since it uses less digits than its factorization.

6777957888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113184 (or 113165 counting only the distinct ones).

The product of its digits is 331914240, while the sum is 72.

The square root of 6777957888 is about 82328.3540950504. The cubic root of 6777957888 is about 1892.4872200758.

The spelling of 6777957888 in words is "six billion, seven hundred seventy-seven million, nine hundred fifty-seven thousand, eight hundred eighty-eight".