27688476042 has 24 divisors (see below), whose sum is σ = 59994912900. Its totient is φ = 9228997440.

The previous prime is 27688476037. The next prime is 27688476043. The reversal of 27688476042 is 24067488672.

It is a happy number.

27688476042 is a `hidden beast` number, since 27 + 6 + 8 + 8 + 4 + 7 + 604 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27059921001 + 628555041 = 164499^2 + 25071^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27688476042.

It is not an unprimeable number, because it can be changed into a prime (27688476043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486942 + ... + 540822.

Almost surely, 2^27688476042 is an apocalyptic number.

27688476042 is an abundant number, since it is smaller than the sum of its proper divisors (32306436858).

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

27688476042 is a wasteful number, since it uses less digits than its factorization.

27688476042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82438 (or 82435 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 27688476042 in words is "twenty-seven billion, six hundred eighty-eight million, four hundred seventy-six thousand, forty-two".