27806373243 has 24 divisors (see below), whose sum is σ = 44078501376. Its totient is φ = 16751425200.

The previous prime is 27806373241. The next prime is 27806373293. The reversal of 27806373243 is 34237360872.

27806373243 is a `hidden beast` number, since 2 + 7 + 8 + 0 + 637 + 3 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 27806373243 - 2¹ = 27806373241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27806373241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 824403 + ... + 857468.

It is an arithmetic number, because the mean of its divisors is an integer number (1836604224).

Almost surely, 2^27806373243 is an apocalyptic number.

27806373243 is a deficient number, since it is larger than the sum of its proper divisors (16272128133).

27806373243 is a wasteful number, since it uses less digits than its factorization.

27806373243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682055 (or 1682052 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 27806373243 in words is "twenty-seven billion, eight hundred six million, three hundred seventy-three thousand, two hundred forty-three".