27646534445 has 4 divisors (see below), whose sum is σ = 33175841340. Its totient is φ = 22117227552.

The previous prime is 27646534381. The next prime is 27646534457. The reversal of 27646534445 is 54443564672.

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 5433016681 + 22213517764 = 73709^2 + 149042^2 .

It is a cyclic number.

It is not a de Polignac number, because 27646534445 - 2⁶ = 27646534381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27646534393 and 27646534402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764653440 + ... + 2764653449.

It is an arithmetic number, because the mean of its divisors is an integer number (8293960335).

Almost surely, 2^27646534445 is an apocalyptic number.

It is an amenable number.

27646534445 is a deficient number, since it is larger than the sum of its proper divisors (5529306895).

27646534445 is an equidigital number, since it uses as much as digits as its factorization.

27646534445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529306894.

The product of its digits is 9676800, while the sum is 50.

The spelling of 27646534445 in words is "twenty-seven billion, six hundred forty-six million, five hundred thirty-four thousand, four hundred forty-five".