28133345527 has 8 divisors (see below), whose sum is σ = 33261098400. Its totient is φ = 23282768544.

The previous prime is 28133345503. The next prime is 28133345557. The reversal of 28133345527 is 72554333182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28133345527 - 2¹⁵ = 28133312759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28133345557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69293752 + ... + 69294157.

It is an arithmetic number, because the mean of its divisors is an integer number (4157637300).

Almost surely, 2^28133345527 is an apocalyptic number.

28133345527 is a deficient number, since it is larger than the sum of its proper divisors (5127752873).

28133345527 is a wasteful number, since it uses less digits than its factorization.

28133345527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138587945.

The product of its digits is 604800, while the sum is 43.

The spelling of 28133345527 in words is "twenty-eight billion, one hundred thirty-three million, three hundred forty-five thousand, five hundred twenty-seven".