28123063389503 has 4 divisors (see below), whose sum is σ = 28381073145480. Its totient is φ = 27865053633528.

The previous prime is 28123063389493. The next prime is 28123063389521. The reversal of 28123063389503 is 30598336032182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28123063389503 - 2¹⁰ = 28123063388479 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 (28123063379503) 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, 129004877825 + ... + 129004878042.

It is an arithmetic number, because the mean of its divisors is an integer number (7095268286370).

Almost surely, 2^{28123063389503} is an apocalyptic number.

28123063389503 is a deficient number, since it is larger than the sum of its proper divisors (258009755977).

28123063389503 is a wasteful number, since it uses less digits than its factorization.

28123063389503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258009755976.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 28123063389503 in words is "twenty-eight trillion, one hundred twenty-three billion, sixty-three million, three hundred eighty-nine thousand, five hundred three".