28140520541 has 4 divisors (see below), whose sum is σ = 32160594912. Its totient is φ = 24120446172.

The previous prime is 28140520531. The next prime is 28140520609. The reversal of 28140520541 is 14502504182.

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 not a de Polignac number, because 28140520541 - 2⁶ = 28140520477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28140520498 and 28140520507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28140520531) 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, 2010037175 + ... + 2010037188.

It is an arithmetic number, because the mean of its divisors is an integer number (8040148728).

Almost surely, 2^28140520541 is an apocalyptic number.

It is an amenable number.

28140520541 is a deficient number, since it is larger than the sum of its proper divisors (4020074371).

28140520541 is an equidigital number, since it uses as much as digits as its factorization.

28140520541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020074370.

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 28140520541 in words is "twenty-eight billion, one hundred forty million, five hundred twenty thousand, five hundred forty-one".