27780444968 has 8 divisors (see below), whose sum is σ = 52088334330. Its totient is φ = 13890222480.

The previous prime is 27780444917. The next prime is 27780444973. The reversal of 27780444968 is 86944408772.

It can be written as a sum of positive squares in only one way, i.e., 16968188644 + 10812256324 = 130262^2 + 103982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1736277803 + ... + 1736277818.

Almost surely, 2^27780444968 is an apocalyptic number.

It is an amenable number.

27780444968 is a deficient number, since it is larger than the sum of its proper divisors (24307889362).

27780444968 is a wasteful number, since it uses less digits than its factorization.

27780444968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472555627 (or 3472555623 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 59.

The spelling of 27780444968 in words is "twenty-seven billion, seven hundred eighty million, four hundred forty-four thousand, nine hundred sixty-eight".