27812261934 has 12 divisors (see below), whose sum is σ = 60259900896. Its totient is φ = 9270753972.

The previous prime is 27812261887. The next prime is 27812261947. The reversal of 27812261934 is 43916221872.

27812261934 is a `hidden beast` number, since 2 + 7 + 8 + 1 + 22 + 619 + 3 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27812261934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772562814 + ... + 772562849.

It is an arithmetic number, because the mean of its divisors is an integer number (5021658408).

Almost surely, 2^27812261934 is an apocalyptic number.

27812261934 is an abundant number, since it is smaller than the sum of its proper divisors (32447638962).

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

27812261934 is a wasteful number, since it uses less digits than its factorization.

27812261934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545125671 (or 1545125668 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 27812261934 in words is "twenty-seven billion, eight hundred twelve million, two hundred sixty-one thousand, nine hundred thirty-four".