28003613613 has 32 divisors (see below), whose sum is σ = 40322954880. Its totient is φ = 17282292480.

The previous prime is 28003613611. The next prime is 28003613629. The reversal of 28003613613 is 31631630082.

It is not a de Polignac number, because 28003613613 - 2¹ = 28003613611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28003613611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883506 + ... + 914652.

It is an arithmetic number, because the mean of its divisors is an integer number (1260092340).

Almost surely, 2^28003613613 is an apocalyptic number.

It is an amenable number.

28003613613 is a deficient number, since it is larger than the sum of its proper divisors (12319341267).

28003613613 is an equidigital number, since it uses as much as digits as its factorization.

28003613613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31262 (or 31228 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 28003613613 in words is "twenty-eight billion, three million, six hundred thirteen thousand, six hundred thirteen".