27813808494 has 48 divisors (see below), whose sum is σ = 64142357760. Its totient is φ = 8680197120.

The previous prime is 27813808489. The next prime is 27813808531. The reversal of 27813808494 is 49480831872.

It is a happy number.

27813808494 is a `hidden beast` number, since 2 + 78 + 1 + 3 + 80 + 8 + 494 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 27813808494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179499 + ... + 296390.

It is an arithmetic number, because the mean of its divisors is an integer number (1336299120).

Almost surely, 2^27813808494 is an apocalyptic number.

27813808494 is an abundant number, since it is smaller than the sum of its proper divisors (36328549266).

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

27813808494 is a wasteful number, since it uses less digits than its factorization.

27813808494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476105 (or 476102 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 27813808494 in words is "twenty-seven billion, eight hundred thirteen million, eight hundred eight thousand, four hundred ninety-four".