27859029768 has 24 divisors (see below), whose sum is σ = 75451539150. Its totient is φ = 9286343232.

The previous prime is 27859029733. The next prime is 27859029773. The reversal of 27859029768 is 86792095872.

It can be written as a sum of positive squares in only one way, i.e., 23377798404 + 4481231364 = 152898^2 + 66942^2 .

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

It is a super-2 number, since 2×27859029768² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193465413 + ... + 193465556.

Almost surely, 2^27859029768 is an apocalyptic number.

It is an amenable number.

27859029768 is an abundant number, since it is smaller than the sum of its proper divisors (47592509382).

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

27859029768 is a wasteful number, since it uses less digits than its factorization.

27859029768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386930981 (or 386930974 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 27859029768 in words is "twenty-seven billion, eight hundred fifty-nine million, twenty-nine thousand, seven hundred sixty-eight".