27481640503 has 4 divisors (see below), whose sum is σ = 27947431080. Its totient is φ = 27015849928.

The previous prime is 27481640477. The next prime is 27481640509. The reversal of 27481640503 is 30504618472.

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 27481640503 - 2²⁹ = 26944769591 is a prime.

It is a super-2 number, since 2×27481640503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27481640509) 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, 232895200 + ... + 232895317.

It is an arithmetic number, because the mean of its divisors is an integer number (6986857770).

Almost surely, 2^27481640503 is an apocalyptic number.

27481640503 is a deficient number, since it is larger than the sum of its proper divisors (465790577).

27481640503 is an equidigital number, since it uses as much as digits as its factorization.

27481640503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465790576.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 27481640503 in words is "twenty-seven billion, four hundred eighty-one million, six hundred forty thousand, five hundred three".