27802454417 has 4 divisors (see below), whose sum is σ = 27963162420. Its totient is φ = 27641746416.

The previous prime is 27802454413. The next prime is 27802454423. The reversal of 27802454417 is 71445420872.

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 26851410496 + 951043921 = 163864^2 + 30839^2 .

It is a cyclic number.

It is not a de Polignac number, because 27802454417 - 2² = 27802454413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27802454411) 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, 80353742 + ... + 80354087.

It is an arithmetic number, because the mean of its divisors is an integer number (6990790605).

Almost surely, 2^27802454417 is an apocalyptic number.

It is an amenable number.

27802454417 is a deficient number, since it is larger than the sum of its proper divisors (160708003).

27802454417 is a wasteful number, since it uses less digits than its factorization.

27802454417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160708002.

The product of its (nonzero) digits is 501760, while the sum is 44.

The spelling of 27802454417 in words is "twenty-seven billion, eight hundred two million, four hundred fifty-four thousand, four hundred seventeen".