28145514843 has 6 divisors (see below), whose sum is σ = 40654632564. Its totient is φ = 18763676556.

The previous prime is 28145514799. The next prime is 28145514871. The reversal of 28145514843 is 34841554182.

28145514843 is a `hidden beast` number, since 2 + 8 + 14 + 551 + 4 + 84 + 3 = 666.

It is not a de Polignac number, because 28145514843 - 2⁶ = 28145514779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28145514883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1563639705 + ... + 1563639722.

It is an arithmetic number, because the mean of its divisors is an integer number (6775772094).

Almost surely, 2^28145514843 is an apocalyptic number.

28145514843 is a deficient number, since it is larger than the sum of its proper divisors (12509117721).

28145514843 is a wasteful number, since it uses less digits than its factorization.

28145514843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127279433 (or 3127279430 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The spelling of 28145514843 in words is "twenty-eight billion, one hundred forty-five million, five hundred fourteen thousand, eight hundred forty-three".