28421232058643 has 4 divisors (see below), whose sum is σ = 28430462731440. Its totient is φ = 28412001385848.

The previous prime is 28421232058631. The next prime is 28421232058697. The reversal of 28421232058643 is 34685023212482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28421232058643 - 2⁶ = 28421232058579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28421232058591 and 28421232058600.

It is not an unprimeable number, because it can be changed into a prime (28421232058613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4615331780 + ... + 4615337937.

It is an arithmetic number, because the mean of its divisors is an integer number (7107615682860).

Almost surely, 2^{28421232058643} is an apocalyptic number.

28421232058643 is a deficient number, since it is larger than the sum of its proper divisors (9230672797).

28421232058643 is an equidigital number, since it uses as much as digits as its factorization.

28421232058643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230672796.

The product of its (nonzero) digits is 4423680, while the sum is 50.

The spelling of 28421232058643 in words is "twenty-eight trillion, four hundred twenty-one billion, two hundred thirty-two million, fifty-eight thousand, six hundred forty-three".