28279355013 has 64 divisors (see below), whose sum is σ = 51594385920. Its totient is φ = 14907649536.

The previous prime is 28279355011. The next prime is 28279355023. The reversal of 28279355013 is 31055397282.

28279355013 is a `hidden beast` number, since 2 + 8 + 2 + 7 + 93 + 550 + 1 + 3 = 666.

It is not a de Polignac number, because 28279355013 - 2¹ = 28279355011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28279355013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28279355011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6968481 + ... + 6972537.

It is an arithmetic number, because the mean of its divisors is an integer number (806162280).

Almost surely, 2^28279355013 is an apocalyptic number.

It is an amenable number.

28279355013 is a deficient number, since it is larger than the sum of its proper divisors (23315030907).

28279355013 is a wasteful number, since it uses less digits than its factorization.

28279355013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923 (or 6917 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 28279355013 in words is "twenty-eight billion, two hundred seventy-nine million, three hundred fifty-five thousand, thirteen".