6571772380 has 12 divisors (see below), whose sum is σ = 13800722040. Its totient is φ = 2628708944.

The previous prime is 6571772377. The next prime is 6571772381. The reversal of 6571772380 is 832771756.

It is a self number, because there is not a number n which added to its sum of digits gives 6571772380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6571772381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164294290 + ... + 164294329.

It is an arithmetic number, because the mean of its divisors is an integer number (1150060170).

Almost surely, 2^6571772380 is an apocalyptic number.

It is an amenable number.

6571772380 is an abundant number, since it is smaller than the sum of its proper divisors (7228949660).

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

6571772380 is a wasteful number, since it uses less digits than its factorization.

6571772380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328588628 (or 328588626 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 6571772380 is about 81066.4689005263. The cubic root of 6571772380 is about 1873.0994554286.

The spelling of 6571772380 in words is "six billion, five hundred seventy-one million, seven hundred seventy-two thousand, three hundred eighty".