28805816143 has 8 divisors (see below), whose sum is σ = 31743082448. Its totient is φ = 25971611904.

The previous prime is 28805816119. The next prime is 28805816159. The reversal of 28805816143 is 34161850882.

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 28805816143 - 2¹³ = 28805807951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28805816093 and 28805816102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805816173) 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, 25764930 + ... + 25766047.

It is an arithmetic number, because the mean of its divisors is an integer number (3967885306).

Almost surely, 2^28805816143 is an apocalyptic number.

28805816143 is a deficient number, since it is larger than the sum of its proper divisors (2937266305).

28805816143 is a wasteful number, since it uses less digits than its factorization.

28805816143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51531033.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 28805816143 in words is "twenty-eight billion, eight hundred five million, eight hundred sixteen thousand, one hundred forty-three".