28107540133 has 4 divisors (see below), whose sum is σ = 29014235008. Its totient is φ = 27200845260.

The previous prime is 28107540127. The next prime is 28107540151. The reversal of 28107540133 is 33104570182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28107540133 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 (28107547133) 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 3 ways as a sum of consecutive naturals, for example, 453347391 + ... + 453347452.

It is an arithmetic number, because the mean of its divisors is an integer number (7253558752).

Almost surely, 2^28107540133 is an apocalyptic number.

It is an amenable number.

28107540133 is a deficient number, since it is larger than the sum of its proper divisors (906694875).

28107540133 is an equidigital number, since it uses as much as digits as its factorization.

28107540133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906694874.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 28107540133 in words is "twenty-eight billion, one hundred seven million, five hundred forty thousand, one hundred thirty-three".