28394012934143 has 4 divisors (see below), whose sum is σ = 28998140868960. Its totient is φ = 27789884999328.

The previous prime is 28394012934137. The next prime is 28394012934173. The reversal of 28394012934143 is 34143921049382.

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 28394012934143 - 2¹⁰ = 28394012933119 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 (28394012934173) 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, 302063967338 + ... + 302063967431.

It is an arithmetic number, because the mean of its divisors is an integer number (7249535217240).

Almost surely, 2^{28394012934143} is an apocalyptic number.

28394012934143 is a deficient number, since it is larger than the sum of its proper divisors (604127934817).

28394012934143 is an equidigital number, since it uses as much as digits as its factorization.

28394012934143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604127934816.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 28394012934143 in words is "twenty-eight trillion, three hundred ninety-four billion, twelve million, nine hundred thirty-four thousand, one hundred forty-three".