27780305253 has 4 divisors (see below), whose sum is σ = 37040407008. Its totient is φ = 18520203500.

The previous prime is 27780305243. The next prime is 27780305263. The reversal of 27780305253 is 35250308772.

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 an interprime number because it is at equal distance from previous prime (27780305243) and next prime (27780305263).

It is a cyclic number.

It is not a de Polignac number, because 27780305253 - 2⁴ = 27780305237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27780305233) 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, 4630050873 + ... + 4630050878.

It is an arithmetic number, because the mean of its divisors is an integer number (9260101752).

Almost surely, 2^27780305253 is an apocalyptic number.

It is an amenable number.

27780305253 is a deficient number, since it is larger than the sum of its proper divisors (9260101755).

27780305253 is an equidigital number, since it uses as much as digits as its factorization.

27780305253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260101754.

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 27780305253 in words is "twenty-seven billion, seven hundred eighty million, three hundred five thousand, two hundred fifty-three".