28182813361 has 4 divisors (see below), whose sum is σ = 28183407424. Its totient is φ = 28182219300.

The previous prime is 28182813301. The next prime is 28182813371. The reversal of 28182813361 is 16331828182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28182813361 - 2⁷ = 28182813233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28182813301) 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, 219045 + ... + 323026.

It is an arithmetic number, because the mean of its divisors is an integer number (7045851856).

Almost surely, 2^28182813361 is an apocalyptic number.

It is an amenable number.

28182813361 is a deficient number, since it is larger than the sum of its proper divisors (594063).

28182813361 is an equidigital number, since it uses as much as digits as its factorization.

28182813361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594062.

The product of its digits is 110592, while the sum is 43.

The spelling of 28182813361 in words is "twenty-eight billion, one hundred eighty-two million, eight hundred thirteen thousand, three hundred sixty-one".