27662981408 has 12 divisors (see below), whose sum is σ = 54461494710. Its totient is φ = 13831490688.

The previous prime is 27662981399. The next prime is 27662981441. The reversal of 27662981408 is 80418926672.

It can be written as a sum of positive squares in only one way, i.e., 17321718544 + 10341262864 = 131612^2 + 101692^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27662981408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432234053 + ... + 432234116.

Almost surely, 2^27662981408 is an apocalyptic number.

It is an amenable number.

27662981408 is a deficient number, since it is larger than the sum of its proper divisors (26798513302).

27662981408 is an equidigital number, since it uses as much as digits as its factorization.

27662981408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864468179 (or 864468171 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 27662981408 in words is "twenty-seven billion, six hundred sixty-two million, nine hundred eighty-one thousand, four hundred eight".