27878394059208 has 1024 divisors, whose sum is σ = 101097013248000. Its totient is φ = 6907420800000.

The previous prime is 27878394059119. The next prime is 27878394059227. The reversal of 27878394059208 is 80295049387872.

27878394059208 is a `hidden beast` number, since 2 + 7 + 8 + 7 + 8 + 3 + 9 + 405 + 9 + 208 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 11858099233 + ... + 11858101583.

It is an arithmetic number, because the mean of its divisors is an integer number (98727552000).

Almost surely, 2^{27878394059208} is an apocalyptic number.

27878394059208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27878394059208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50548506624000).

27878394059208 is an abundant number, since it is smaller than the sum of its proper divisors (73218619188792).

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

27878394059208 is a wasteful number, since it uses less digits than its factorization.

27878394059208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 27878394059208 in words is "twenty-seven trillion, eight hundred seventy-eight billion, three hundred ninety-four million, fifty-nine thousand, two hundred eight".