28315825013 has 8 divisors (see below), whose sum is σ = 32471392128. Its totient is φ = 24187870224.

The previous prime is 28315825009. The next prime is 28315825019. The reversal of 28315825013 is 31052851382.

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

It is not a de Polignac number, because 28315825013 - 2² = 28315825009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315825019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6900881 + ... + 6904982.

It is an arithmetic number, because the mean of its divisors is an integer number (4058924016).

Almost surely, 2^28315825013 is an apocalyptic number.

It is an amenable number.

28315825013 is a deficient number, since it is larger than the sum of its proper divisors (4155567115).

28315825013 is a wasteful number, since it uses less digits than its factorization.

28315825013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806163.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 28315825013 in words is "twenty-eight billion, three hundred fifteen million, eight hundred twenty-five thousand, thirteen".