28717145743 has 24 divisors (see below), whose sum is σ = 34252949808. Its totient is φ = 23914176000.

The previous prime is 28717145683. The next prime is 28717145759. The reversal of 28717145743 is 34754171782.

It is not a de Polignac number, because 28717145743 - 2⁹ = 28717145231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28717145783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136383 + ... + 275743.

It is an arithmetic number, because the mean of its divisors is an integer number (1427206242).

Almost surely, 2^28717145743 is an apocalyptic number.

28717145743 is a deficient number, since it is larger than the sum of its proper divisors (5535804065).

28717145743 is a wasteful number, since it uses less digits than its factorization.

28717145743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139527 (or 139516 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 49.

The spelling of 28717145743 in words is "twenty-eight billion, seven hundred seventeen million, one hundred forty-five thousand, seven hundred forty-three".