28625635136784 has 80 divisors (see below), whose sum is σ = 84550963784832. Its totient is φ = 8175154458624.

The previous prime is 28625635136779. The next prime is 28625635136789. The reversal of 28625635136784 is 48763153652682.

It is an interprime number because it is at equal distance from previous prime (28625635136779) and next prime (28625635136789).

It is not an unprimeable number, because it can be changed into a prime (28625635136789) 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 15 ways as a sum of consecutive naturals, for example, 17976999 + ... + 19504454.

Almost surely, 2^{28625635136784} is an apocalyptic number.

28625635136784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28625635136784 is an abundant number, since it is smaller than the sum of its proper divisors (55925328648048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28625635136784 is a wasteful number, since it uses less digits than its factorization.

28625635136784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37483744 (or 37483738 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 66.

The spelling of 28625635136784 in words is "twenty-eight trillion, six hundred twenty-five billion, six hundred thirty-five million, one hundred thirty-six thousand, seven hundred eighty-four".