27657676253 has 16 divisors (see below), whose sum is σ = 27979886256. Its totient is φ = 27337927680.

The previous prime is 27657676199. The next prime is 27657676273. The reversal of 27657676253 is 35267675672.

It can be written as a sum of positive squares in 8 ways, for example, as 629658649 + 27028017604 = 25093^2 + 164402^2 .

It is a cyclic number.

It is not a de Polignac number, because 27657676253 - 2²² = 27653481949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27657676273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31536251 + ... + 31537127.

It is an arithmetic number, because the mean of its divisors is an integer number (1748742891).

Almost surely, 2^27657676253 is an apocalyptic number.

It is an amenable number.

27657676253 is a deficient number, since it is larger than the sum of its proper divisors (322210003).

27657676253 is a wasteful number, since it uses less digits than its factorization.

27657676253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904.

The product of its digits is 22226400, while the sum is 56.

The spelling of 27657676253 in words is "twenty-seven billion, six hundred fifty-seven million, six hundred seventy-six thousand, two hundred fifty-three".