28131615033 has 4 divisors (see below), whose sum is σ = 37508820048. Its totient is φ = 18754410020.

The previous prime is 28131614993. The next prime is 28131615041. The reversal of 28131615033 is 33051613182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28131615033 - 2¹⁰ = 28131614009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28131614985 and 28131615003.

It is not an unprimeable number, because it can be changed into a prime (28131615053) 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, 4688602503 + ... + 4688602508.

It is an arithmetic number, because the mean of its divisors is an integer number (9377205012).

Almost surely, 2^28131615033 is an apocalyptic number.

It is an amenable number.

28131615033 is a deficient number, since it is larger than the sum of its proper divisors (9377205015).

28131615033 is an equidigital number, since it uses as much as digits as its factorization.

28131615033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9377205014.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 28131615033 in words is "twenty-eight billion, one hundred thirty-one million, six hundred fifteen thousand, thirty-three".