27816405606 has 96 divisors (see below), whose sum is σ = 66549600000. Its totient is φ = 8327067840.

The previous prime is 27816405581. The next prime is 27816405613. The reversal of 27816405606 is 60650461872.

27816405606 is a `hidden beast` number, since 2 + 7 + 81 + 6 + 4 + 0 + 560 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5561895 + ... + 5566893.

It is an arithmetic number, because the mean of its divisors is an integer number (693225000).

Almost surely, 2^27816405606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27816405606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33274800000).

27816405606 is an abundant number, since it is smaller than the sum of its proper divisors (38733194394).

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

27816405606 is a wasteful number, since it uses less digits than its factorization.

27816405606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354 (or 5351 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 27816405606 in words is "twenty-seven billion, eight hundred sixteen million, four hundred five thousand, six hundred six".