27890625011 has 4 divisors (see below), whose sum is σ = 28790322624. Its totient is φ = 26990927400.

The previous prime is 27890624977. The next prime is 27890625013. The reversal of 27890625011 is 11052609872.

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

It is a cyclic number.

It is not a de Polignac number, because 27890625011 - 2⁶ = 27890624947 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 27890625011.

It is not an unprimeable number, because it can be changed into a prime (27890625013) 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, 449848760 + ... + 449848821.

It is an arithmetic number, because the mean of its divisors is an integer number (7197580656).

Almost surely, 2^27890625011 is an apocalyptic number.

27890625011 is a deficient number, since it is larger than the sum of its proper divisors (899697613).

27890625011 is an equidigital number, since it uses as much as digits as its factorization.

27890625011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899697612.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 27890625011 in words is "twenty-seven billion, eight hundred ninety million, six hundred twenty-five thousand, eleven".