28873120821043 has 4 divisors (see below), whose sum is σ = 28873146467008. Its totient is φ = 28873095175080.

The previous prime is 28873120821023. The next prime is 28873120821047. The reversal of 28873120821043 is 34012802137882.

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 28873120821043 - 2⁵ = 28873120821011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28873120821047) 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, 11052771 + ... + 13413052.

It is an arithmetic number, because the mean of its divisors is an integer number (7218286616752).

Almost surely, 2^{28873120821043} is an apocalyptic number.

28873120821043 is a deficient number, since it is larger than the sum of its proper divisors (25645965).

28873120821043 is a wasteful number, since it uses less digits than its factorization.

28873120821043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25645964.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 28873120821043 in words is "twenty-eight trillion, eight hundred seventy-three billion, one hundred twenty million, eight hundred twenty-one thousand, forty-three".