28913509543 has 8 divisors (see below), whose sum is σ = 30747995280. Its totient is φ = 27093878400.

The previous prime is 28913509411. The next prime is 28913509589. The reversal of 28913509543 is 34590531982.

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

It is a cyclic number.

It is not a de Polignac number, because 28913509543 - 2³³ = 20323574951 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 (28913509243) 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, 3709633 + ... + 3717418.

It is an arithmetic number, because the mean of its divisors is an integer number (3843499410).

Almost surely, 2^28913509543 is an apocalyptic number.

28913509543 is a deficient number, since it is larger than the sum of its proper divisors (1834485737).

28913509543 is a wasteful number, since it uses less digits than its factorization.

28913509543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7427297.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 28913509543 in words is "twenty-eight billion, nine hundred thirteen million, five hundred nine thousand, five hundred forty-three".