27215686338 has 32 divisors (see below), whose sum is σ = 54847233216. Its totient is φ = 9002779968.

The previous prime is 27215686271. The next prime is 27215686343. The reversal of 27215686338 is 83368651272.

It is a happy number.

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 in 15 ways as a sum of consecutive naturals, for example, 543820 + ... + 591752.

It is an arithmetic number, because the mean of its divisors is an integer number (1713976038).

Almost surely, 2^27215686338 is an apocalyptic number.

27215686338 is an abundant number, since it is smaller than the sum of its proper divisors (27631546878).

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

27215686338 is a wasteful number, since it uses less digits than its factorization.

27215686338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48658.

The product of its digits is 2903040, while the sum is 51.

The spelling of 27215686338 in words is "twenty-seven billion, two hundred fifteen million, six hundred eighty-six thousand, three hundred thirty-eight".