27780444572 has 12 divisors (see below), whose sum is σ = 48781704216. Its totient is φ = 13842814800.

The previous prime is 27780444553. The next prime is 27780444577. The reversal of 27780444572 is 27544408772.

It is a self number, because there is not a number n which added to its sum of digits gives 27780444572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27780444577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11850554 + ... + 11852897.

It is an arithmetic number, because the mean of its divisors is an integer number (4065142018).

Almost surely, 2^27780444572 is an apocalyptic number.

It is an amenable number.

27780444572 is a deficient number, since it is larger than the sum of its proper divisors (21001259644).

27780444572 is a wasteful number, since it uses less digits than its factorization.

27780444572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23703748 (or 23703746 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 50.

The spelling of 27780444572 in words is "twenty-seven billion, seven hundred eighty million, four hundred forty-four thousand, five hundred seventy-two".