27771672384 has 84 divisors (see below), whose sum is σ = 79651530816. Its totient is φ = 9251520768.

The previous prime is 27771672377. The next prime is 27771672389. The reversal of 27771672384 is 48327617772.

It is a self number, because there is not a number n which added to its sum of digits gives 27771672384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27771672389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 978457 + ... + 1006439.

Almost surely, 2^27771672384 is an apocalyptic number.

27771672384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27771672384 is an abundant number, since it is smaller than the sum of its proper divisors (51879858432).

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

27771672384 is a wasteful number, since it uses less digits than its factorization.

27771672384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29724 (or 29711 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The spelling of 27771672384 in words is "twenty-seven billion, seven hundred seventy-one million, six hundred seventy-two thousand, three hundred eighty-four".