27689856568 has 32 divisors (see below), whose sum is σ = 59619312000. Its totient is φ = 11923860960.

The previous prime is 27689856563. The next prime is 27689856613. The reversal of 27689856568 is 86565898672.

It is a junction number, because it is equal to n+sod(n) for n = 27689856497 and 27689856506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27689856563) 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, 8278788 + ... + 8282131.

It is an arithmetic number, because the mean of its divisors is an integer number (1863103500).

Almost surely, 2^27689856568 is an apocalyptic number.

It is an amenable number.

27689856568 is an abundant number, since it is smaller than the sum of its proper divisors (31929455432).

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

27689856568 is a wasteful number, since it uses less digits than its factorization.

27689856568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16560955 (or 16560951 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 70.

The spelling of 27689856568 in words is "twenty-seven billion, six hundred eighty-nine million, eight hundred fifty-six thousand, five hundred sixty-eight".