27874075657 has 4 divisors (see below), whose sum is σ = 27935069716. Its totient is φ = 27813081600.

The previous prime is 27874075639. The next prime is 27874075693. The reversal of 27874075657 is 75657047872.

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 9498646521 + 18375429136 = 97461^2 + 135556^2 .

It is a cyclic number.

It is not a de Polignac number, because 27874075657 - 2¹¹ = 27874073609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27874075627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30496344 + ... + 30497257.

It is an arithmetic number, because the mean of its divisors is an integer number (6983767429).

Almost surely, 2^27874075657 is an apocalyptic number.

It is an amenable number.

27874075657 is a deficient number, since it is larger than the sum of its proper divisors (60994059).

27874075657 is an equidigital number, since it uses as much as digits as its factorization.

27874075657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60994058.

The product of its (nonzero) digits is 23049600, while the sum is 58.

The spelling of 27874075657 in words is "twenty-seven billion, eight hundred seventy-four million, seventy-five thousand, six hundred fifty-seven".