27807407211 has 4 divisors (see below), whose sum is σ = 37076542952. Its totient is φ = 18538271472.

The previous prime is 27807407203. The next prime is 27807407237. The reversal of 27807407211 is 11270470872.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27807407211 - 2³ = 27807407203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27807407211.

It is not an unprimeable number, because it can be changed into a prime (27807407711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4634567866 + ... + 4634567871.

It is an arithmetic number, because the mean of its divisors is an integer number (9269135738).

Almost surely, 2^27807407211 is an apocalyptic number.

27807407211 is a deficient number, since it is larger than the sum of its proper divisors (9269135741).

27807407211 is an equidigital number, since it uses as much as digits as its factorization.

27807407211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9269135740.

The product of its (nonzero) digits is 43904, while the sum is 39.

The spelling of 27807407211 in words is "twenty-seven billion, eight hundred seven million, four hundred seven thousand, two hundred eleven".