27694981441 has 4 divisors (see below), whose sum is σ = 27695925972. Its totient is φ = 27694036912.

The previous prime is 27694981399. The next prime is 27694981459. The reversal of 27694981441 is 14418949672.

It is a happy number.

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 19410341041 + 8284640400 = 139321^2 + 91020^2 .

It is a cyclic number.

It is not a de Polignac number, because 27694981441 - 2¹⁷ = 27694850369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27694981471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426826 + ... + 487411.

It is an arithmetic number, because the mean of its divisors is an integer number (6923981493).

Almost surely, 2^27694981441 is an apocalyptic number.

It is an amenable number.

27694981441 is a deficient number, since it is larger than the sum of its proper divisors (944531).

27694981441 is an equidigital number, since it uses as much as digits as its factorization.

27694981441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944530.

The product of its digits is 3483648, while the sum is 55.

The spelling of 27694981441 in words is "twenty-seven billion, six hundred ninety-four million, nine hundred eighty-one thousand, four hundred forty-one".