28276131133549 has 16 divisors (see below), whose sum is σ = 30709275569280. Its totient is φ = 25880771770560.

The previous prime is 28276131133541. The next prime is 28276131133589. The reversal of 28276131133549 is 94533113167282.

It is a cyclic number.

It is not a de Polignac number, because 28276131133549 - 2³ = 28276131133541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28276131133549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28276131133541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18422857 + ... + 19898590.

It is an arithmetic number, because the mean of its divisors is an integer number (1919329723080).

Almost surely, 2^{28276131133549} is an apocalyptic number.

It is an amenable number.

28276131133549 is a deficient number, since it is larger than the sum of its proper divisors (2433144435731).

28276131133549 is a wasteful number, since it uses less digits than its factorization.

28276131133549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38321940.

The product of its digits is 6531840, while the sum is 55.

The spelling of 28276131133549 in words is "twenty-eight trillion, two hundred seventy-six billion, one hundred thirty-one million, one hundred thirty-three thousand, five hundred forty-nine".