28385257612503 has 8 divisors (see below), whose sum is σ = 41287647436416. Its totient is φ = 17203186431800.

The previous prime is 28385257612363. The next prime is 28385257612529. The reversal of 28385257612503 is 30521675258382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28385257612503 - 2¹⁷ = 28385257481431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28385257612003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430079660763 + ... + 430079660828.

It is an arithmetic number, because the mean of its divisors is an integer number (5160955929552).

Almost surely, 2^{28385257612503} is an apocalyptic number.

28385257612503 is a deficient number, since it is larger than the sum of its proper divisors (12902389823913).

28385257612503 is a wasteful number, since it uses less digits than its factorization.

28385257612503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860159321605.

The product of its (nonzero) digits is 24192000, while the sum is 57.

The spelling of 28385257612503 in words is "twenty-eight trillion, three hundred eighty-five billion, two hundred fifty-seven million, six hundred twelve thousand, five hundred three".