27315074879 has 4 divisors (see below), whose sum is σ = 28053320184. Its totient is φ = 26576829576.

The previous prime is 27315074869. The next prime is 27315074881. The reversal of 27315074879 is 97847051372.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27315074879 is a prime.

It is a super-2 number, since 2×27315074879² (a number of 22 digits) contains 22 as substring.

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 27315074879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27315074849) 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, 369122597 + ... + 369122670.

It is an arithmetic number, because the mean of its divisors is an integer number (7013330046).

Almost surely, 2^27315074879 is an apocalyptic number.

27315074879 is a deficient number, since it is larger than the sum of its proper divisors (738245305).

27315074879 is an equidigital number, since it uses as much as digits as its factorization.

27315074879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738245304.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 27315074879 in words is "twenty-seven billion, three hundred fifteen million, seventy-four thousand, eight hundred seventy-nine".