27720586558 has 16 divisors (see below), whose sum is σ = 48532091904. Its totient is φ = 11627479800.

The previous prime is 27720586513. The next prime is 27720586559. The reversal of 27720586558 is 85568502772.

It is a junction number, because it is equal to n+sod(n) for n = 27720586499 and 27720586508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27720586559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21063618 + ... + 21064933.

It is an arithmetic number, because the mean of its divisors is an integer number (3033255744).

Almost surely, 2^27720586558 is an apocalyptic number.

27720586558 is a deficient number, since it is larger than the sum of its proper divisors (20811505346).

27720586558 is a wasteful number, since it uses less digits than its factorization.

27720586558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42128607.

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 27720586558 in words is "twenty-seven billion, seven hundred twenty million, five hundred eighty-six thousand, five hundred fifty-eight".