27802892243421 has 18 divisors (see below), whose sum is σ = 42661031508602. Its totient is φ = 17444951994240.

The previous prime is 27802892243411. The next prime is 27802892243453. The reversal of 27802892243421 is 12434229820872.

It is a happy number.

27802892243421 is a `hidden beast` number, since 2 + 7 + 80 + 2 + 89 + 22 + 43 + 421 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13409108804025 + 14393783439396 = 3661845^2 + 3793914^2 .

It is not a de Polignac number, because 27802892243421 - 2⁵ = 27802892243389 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 (27802892243411) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5344651810 + ... + 5344657011.

Almost surely, 2^{27802892243421} is an apocalyptic number.

It is an amenable number.

27802892243421 is a deficient number, since it is larger than the sum of its proper divisors (14858139265181).

27802892243421 is a wasteful number, since it uses less digits than its factorization.

27802892243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10689308861 (or 10689308841 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 27802892243421 in words is "twenty-seven trillion, eight hundred two billion, eight hundred ninety-two million, two hundred forty-three thousand, four hundred twenty-one".