6775143540 has 96 divisors (see below), whose sum is σ = 20718875520. Its totient is φ = 1640563200.

The previous prime is 6775143539. The next prime is 6775143563. The reversal of 6775143540 is 453415776.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6775143492 and 6775143501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615606 + ... + 626514.

It is an arithmetic number, because the mean of its divisors is an integer number (215821620).

Almost surely, 2^6775143540 is an apocalyptic number.

6775143540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6775143540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10359437760).

6775143540 is an abundant number, since it is smaller than the sum of its proper divisors (13943731980).

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

6775143540 is a wasteful number, since it uses less digits than its factorization.

6775143540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873 (or 11871 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The square root of 6775143540 is about 82311.2601045568. The cubic root of 6775143540 is about 1892.2252505636.

The spelling of 6775143540 in words is "six billion, seven hundred seventy-five million, one hundred forty-three thousand, five hundred forty".