28126165743 has 12 divisors (see below), whose sum is σ = 43751813560. Its totient is φ = 17308409616.

The previous prime is 28126165583. The next prime is 28126165757. The reversal of 28126165743 is 34756162182.

28126165743 is a `hidden beast` number, since 2 + 8 + 12 + 61 + 6 + 574 + 3 = 666.

It is not a de Polignac number, because 28126165743 - 2⁹ = 28126165231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28126165343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120197173 + ... + 120197406.

Almost surely, 2^28126165743 is an apocalyptic number.

28126165743 is a deficient number, since it is larger than the sum of its proper divisors (15625647817).

28126165743 is a wasteful number, since it uses less digits than its factorization.

28126165743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240394598 (or 240394595 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 28126165743 in words is "twenty-eight billion, one hundred twenty-six million, one hundred sixty-five thousand, seven hundred forty-three".