6771380391 has 6 divisors (see below), whose sum is σ = 9780882800. Its totient is φ = 4514253588.

The previous prime is 6771380353. The next prime is 6771380411. The reversal of 6771380391 is 1930831776.

It is not a de Polignac number, because 6771380391 - 2²⁵ = 6737825959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6771380311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 376187791 + ... + 376187808.

Almost surely, 2^6771380391 is an apocalyptic number.

6771380391 is a deficient number, since it is larger than the sum of its proper divisors (3009502409).

6771380391 is a wasteful number, since it uses less digits than its factorization.

6771380391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752375605 (or 752375602 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 6771380391 is about 82288.3976694163. The cubic root of 6771380391 is about 1891.8748499022.

The spelling of 6771380391 in words is "six billion, seven hundred seventy-one million, three hundred eighty thousand, three hundred ninety-one".