27806135612 has 24 divisors (see below), whose sum is σ = 51678834480. Its totient is φ = 13045697280.

The previous prime is 27806135537. The next prime is 27806135641. The reversal of 27806135612 is 21653160872.

It is a super-2 number, since 2×27806135612² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27806135612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595187 + ... + 640202.

It is an arithmetic number, because the mean of its divisors is an integer number (2153284770).

Almost surely, 2^27806135612 is an apocalyptic number.

It is an amenable number.

27806135612 is a deficient number, since it is larger than the sum of its proper divisors (23872698868).

27806135612 is a wasteful number, since it uses less digits than its factorization.

27806135612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235741 (or 1235739 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 27806135612 in words is "twenty-seven billion, eight hundred six million, one hundred thirty-five thousand, six hundred twelve".