27641037121 has 4 divisors (see below), whose sum is σ = 27643147972. Its totient is φ = 27638926272.

The previous prime is 27641037071. The next prime is 27641037133. The reversal of 27641037121 is 12173014672.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13376079025 + 14264958096 = 115655^2 + 119436^2 .

It is a cyclic number.

It is not a de Polignac number, because 27641037121 - 2⁷ = 27641036993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27641017121) 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, 1035660 + ... + 1062013.

It is an arithmetic number, because the mean of its divisors is an integer number (6910786993).

Almost surely, 2^27641037121 is an apocalyptic number.

It is an amenable number.

27641037121 is a deficient number, since it is larger than the sum of its proper divisors (2110851).

27641037121 is a wasteful number, since it uses less digits than its factorization.

27641037121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110850.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 27641037121 in words is "twenty-seven billion, six hundred forty-one million, thirty-seven thousand, one hundred twenty-one".