27840823927218 has 64 divisors (see below), whose sum is σ = 62462686809600. Its totient is φ = 9191218780800.

The previous prime is 27840823927201. The next prime is 27840823927219. The reversal of 27840823927218 is 81272932804872.

27840823927218 is a `hidden beast` number, since 2 + 7 + 8 + 408 + 2 + 3 + 9 + 2 + 7 + 218 = 666.

It is a super-2 number, since 2×27840823927218² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27840823927219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12832030 + ... + 14843942.

It is an arithmetic number, because the mean of its divisors is an integer number (975979481400).

Almost surely, 2^{27840823927218} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27840823927218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31231343404800).

27840823927218 is an abundant number, since it is smaller than the sum of its proper divisors (34621862882382).

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

27840823927218 is a wasteful number, since it uses less digits than its factorization.

27840823927218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014384 (or 2014378 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 27840823927218 in words is "twenty-seven trillion, eight hundred forty billion, eight hundred twenty-three million, nine hundred twenty-seven thousand, two hundred eighteen".