27318254477 has 4 divisors (see below), whose sum is σ = 27348242496. Its totient is φ = 27288266460.

The previous prime is 27318254461. The next prime is 27318254489. The reversal of 27318254477 is 77445281372.

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 27318254477 - 2⁴ = 27318254461 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 (27318254077) 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, 14992643 + ... + 14994464.

It is an arithmetic number, because the mean of its divisors is an integer number (6837060624).

Almost surely, 2^27318254477 is an apocalyptic number.

It is an amenable number.

27318254477 is a deficient number, since it is larger than the sum of its proper divisors (29988019).

27318254477 is an equidigital number, since it uses as much as digits as its factorization.

27318254477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29988018.

The product of its digits is 2634240, while the sum is 50.

The spelling of 27318254477 in words is "twenty-seven billion, three hundred eighteen million, two hundred fifty-four thousand, four hundred seventy-seven".