6771221192 has 36 divisors (see below), whose sum is σ = 12992905755. Its totient is φ = 3308223216.

The previous prime is 6771221179. The next prime is 6771221207. The reversal of 6771221192 is 2911221776.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 3385610596 + 3385610596 = 58186^2 + 58186^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=58186.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10938659 + ... + 10939277.

Almost surely, 2^6771221192 is an apocalyptic number.

It is an amenable number.

6771221192 is a deficient number, since it is larger than the sum of its proper divisors (6221684563).

6771221192 is an frugal number, since it uses more digits than its factorization.

6771221192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 668 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 6771221192 is about 82287.4303402409. The cubic root of 6771221192 is about 1891.8600234352.

The spelling of 6771221192 in words is "six billion, seven hundred seventy-one million, two hundred twenty-one thousand, one hundred ninety-two".