28244237221503 has 12 divisors (see below), whose sum is σ = 41025149039160. Its totient is φ = 18724298790096.

The previous prime is 28244237221463. The next prime is 28244237221537. The reversal of 28244237221503 is 30512273244282.

28244237221503 is a `hidden beast` number, since 2 + 8 + 2 + 4 + 423 + 7 + 2 + 215 + 0 + 3 = 666.

It is not a de Polignac number, because 28244237221503 - 2⁸ = 28244237221247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28244237221003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8766055876 + ... + 8766059097.

It is an arithmetic number, because the mean of its divisors is an integer number (3418762419930).

Almost surely, 2^{28244237221503} is an apocalyptic number.

28244237221503 is a deficient number, since it is larger than the sum of its proper divisors (12780911817657).

28244237221503 is a wasteful number, since it uses less digits than its factorization.

28244237221503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17532115158 (or 17532115155 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 28244237221503 in words is "twenty-eight trillion, two hundred forty-four billion, two hundred thirty-seven million, two hundred twenty-one thousand, five hundred three".