27245142503 has 4 divisors (see below), whose sum is σ = 27265074480. Its totient is φ = 27225210528.

The previous prime is 27245142493. The next prime is 27245142527. The reversal of 27245142503 is 30524154272.

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 27245142503 - 2⁸ = 27245142247 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 (27245142553) 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, 9963938 + ... + 9966671.

It is an arithmetic number, because the mean of its divisors is an integer number (6816268620).

Almost surely, 2^27245142503 is an apocalyptic number.

27245142503 is a deficient number, since it is larger than the sum of its proper divisors (19931977).

27245142503 is a wasteful number, since it uses less digits than its factorization.

27245142503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19931976.

The product of its (nonzero) digits is 67200, while the sum is 35.

Adding to 27245142503 its reverse (30524154272), we get a palindrome (57769296775).

The spelling of 27245142503 in words is "twenty-seven billion, two hundred forty-five million, one hundred forty-two thousand, five hundred three".