27806040154 has 4 divisors (see below), whose sum is σ = 41709060234. Its totient is φ = 13903020076.

The previous prime is 27806040127. The next prime is 27806040211. The reversal of 27806040154 is 45104060872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22627078929 + 5178961225 = 150423^2 + 71965^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6951510037 + ... + 6951510040.

Almost surely, 2^27806040154 is an apocalyptic number.

27806040154 is a deficient number, since it is larger than the sum of its proper divisors (13903020080).

27806040154 is a wasteful number, since it uses less digits than its factorization.

27806040154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13903020079.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 27806040154 in words is "twenty-seven billion, eight hundred six million, forty thousand, one hundred fifty-four".