27774833568 has 24 divisors (see below), whose sum is σ = 72908938368. Its totient is φ = 9258277824.

The previous prime is 27774833561. The next prime is 27774833587. The reversal of 27774833568 is 86533847772.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×27774833568² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27774833561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144660496 + ... + 144660687.

It is an arithmetic number, because the mean of its divisors is an integer number (3037872432).

Almost surely, 2^27774833568 is an apocalyptic number.

It is an amenable number.

27774833568 is an abundant number, since it is smaller than the sum of its proper divisors (45134104800).

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

27774833568 is a wasteful number, since it uses less digits than its factorization.

27774833568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289321196 (or 289321188 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 60.

The spelling of 27774833568 in words is "twenty-seven billion, seven hundred seventy-four million, eight hundred thirty-three thousand, five hundred sixty-eight".