27720463499568 has 60 divisors (see below), whose sum is σ = 88661482466128. Its totient is φ = 7920132428160.

The previous prime is 27720463499471. The next prime is 27720463499581. The reversal of 27720463499568 is 86599436402772.

27720463499568 is a `hidden beast` number, since 2 + 7 + 7 + 20 + 4 + 6 + 34 + 9 + 9 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 27720463499496 and 27720463499505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13750228903 + ... + 13750230918.

Almost surely, 2^{27720463499568} is an apocalyptic number.

27720463499568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27720463499568 is an abundant number, since it is smaller than the sum of its proper divisors (60941018966560).

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

27720463499568 is a wasteful number, since it uses less digits than its factorization.

27720463499568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27500459842 (or 27500459833 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 72.

The spelling of 27720463499568 in words is "twenty-seven trillion, seven hundred twenty billion, four hundred sixty-three million, four hundred ninety-nine thousand, five hundred sixty-eight".