27820798363 has 4 divisors (see below), whose sum is σ = 27884171920. Its totient is φ = 27757424808.

The previous prime is 27820798339. The next prime is 27820798391. The reversal of 27820798363 is 36389702872.

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-27820798363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27820798063) 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, 31686120 + ... + 31686997.

It is an arithmetic number, because the mean of its divisors is an integer number (6971042980).

Almost surely, 2^27820798363 is an apocalyptic number.

27820798363 is a deficient number, since it is larger than the sum of its proper divisors (63373557).

27820798363 is an equidigital number, since it uses as much as digits as its factorization.

27820798363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63373556.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 27820798363 in words is "twenty-seven billion, eight hundred twenty million, seven hundred ninety-eight thousand, three hundred sixty-three".