28985409951366 has 32 divisors (see below), whose sum is σ = 64783355285376. Its totient is φ = 8569226888000.

The previous prime is 28985409951361. The next prime is 28985409951397. The reversal of 28985409951366 is 66315990458982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28985409951361) 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 15 ways as a sum of consecutive naturals, for example, 5355764100 + ... + 5355769511.

It is an arithmetic number, because the mean of its divisors is an integer number (2024479852668).

Almost surely, 2^{28985409951366} is an apocalyptic number.

28985409951366 is an abundant number, since it is smaller than the sum of its proper divisors (35797945334010).

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

28985409951366 is a wasteful number, since it uses less digits than its factorization.

28985409951366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711533668.

The product of its (nonzero) digits is 1007769600, while the sum is 75.

The spelling of 28985409951366 in words is "twenty-eight trillion, nine hundred eighty-five billion, four hundred nine million, nine hundred fifty-one thousand, three hundred sixty-six".