28201132543 has 8 divisors (see below), whose sum is σ = 29140981760. Its totient is φ = 27263166840.

The previous prime is 28201132457. The next prime is 28201132607. The reversal of 28201132543 is 34523110282.

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 28201132543 - 2²⁵ = 28167578111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201132343) 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, 440403 + ... + 500356.

It is an arithmetic number, because the mean of its divisors is an integer number (3642622720).

Almost surely, 2^28201132543 is an apocalyptic number.

28201132543 is a deficient number, since it is larger than the sum of its proper divisors (939849217).

28201132543 is an equidigital number, since it uses as much as digits as its factorization.

28201132543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941757.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 28201132543 in words is "twenty-eight billion, two hundred one million, one hundred thirty-two thousand, five hundred forty-three".