27825166138 has 32 divisors (see below), whose sum is σ = 52121190528. Its totient is φ = 10823366400.

The previous prime is 27825166133. The next prime is 27825166157. The reversal of 27825166138 is 83166152872.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27825166091 and 27825166100.

It is not an unprimeable number, because it can be changed into a prime (27825166133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51403 + ... + 241438.

It is an arithmetic number, because the mean of its divisors is an integer number (1628787204).

Almost surely, 2^27825166138 is an apocalyptic number.

27825166138 is a deficient number, since it is larger than the sum of its proper divisors (24296024390).

27825166138 is a wasteful number, since it uses less digits than its factorization.

27825166138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293478.

The product of its digits is 967680, while the sum is 49.

The spelling of 27825166138 in words is "twenty-seven billion, eight hundred twenty-five million, one hundred sixty-six thousand, one hundred thirty-eight".