28318688013 has 64 divisors (see below), whose sum is σ = 47497439232. Its totient is φ = 14579585280.

The previous prime is 28318687979. The next prime is 28318688023. The reversal of 28318688013 is 31088681382.

It is not a de Polignac number, because 28318688013 - 2⁸ = 28318687757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318688023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18966895 + ... + 18968387.

It is an arithmetic number, because the mean of its divisors is an integer number (742147488).

Almost surely, 2^28318688013 is an apocalyptic number.

It is an amenable number.

28318688013 is a deficient number, since it is larger than the sum of its proper divisors (19178751219).

28318688013 is a wasteful number, since it uses less digits than its factorization.

28318688013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 28318688013 in words is "twenty-eight billion, three hundred eighteen million, six hundred eighty-eight thousand, thirteen".