27805052553 has 4 divisors (see below), whose sum is σ = 37073403408. Its totient is φ = 18536701700.

The previous prime is 27805052551. The next prime is 27805052557. The reversal of 27805052553 is 35525050872.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27805052553 - 2¹ = 27805052551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27805052551) 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, 4634175423 + ... + 4634175428.

It is an arithmetic number, because the mean of its divisors is an integer number (9268350852).

Almost surely, 2^27805052553 is an apocalyptic number.

It is an amenable number.

27805052553 is a deficient number, since it is larger than the sum of its proper divisors (9268350855).

27805052553 is an equidigital number, since it uses as much as digits as its factorization.

27805052553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268350854.

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 27805052553 in words is "twenty-seven billion, eight hundred five million, fifty-two thousand, five hundred fifty-three".