27747670453 has 4 divisors (see below), whose sum is σ = 29379886380. Its totient is φ = 26115454528.

The previous prime is 27747670439. The next prime is 27747670459. The reversal of 27747670453 is 35407674772.

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 24911255889 + 2836414564 = 157833^2 + 53258^2 .

It is a cyclic number.

It is not a de Polignac number, because 27747670453 - 2¹⁷ = 27747539381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27747670453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27747670459) 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, 816107938 + ... + 816107971.

It is an arithmetic number, because the mean of its divisors is an integer number (7344971595).

Almost surely, 2^27747670453 is an apocalyptic number.

It is an amenable number.

27747670453 is a deficient number, since it is larger than the sum of its proper divisors (1632215927).

27747670453 is a wasteful number, since it uses less digits than its factorization.

27747670453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632215926.

The product of its (nonzero) digits is 6914880, while the sum is 52.

The spelling of 27747670453 in words is "twenty-seven billion, seven hundred forty-seven million, six hundred seventy thousand, four hundred fifty-three".