27770163806 has 96 divisors (see below), whose sum is σ = 53098536960. Its totient is φ = 10661333760.

The previous prime is 27770163793. The next prime is 27770163877. The reversal of 27770163806 is 60836107772.

It is a Curzon number.

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, 45749555 + ... + 45750161.

It is an arithmetic number, because the mean of its divisors is an integer number (553109760).

Almost surely, 2^27770163806 is an apocalyptic number.

27770163806 is a deficient number, since it is larger than the sum of its proper divisors (25328373154).

27770163806 is a wasteful number, since it uses less digits than its factorization.

27770163806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 27770163806 in words is "twenty-seven billion, seven hundred seventy million, one hundred sixty-three thousand, eight hundred six".