28545127647 has 16 divisors (see below), whose sum is σ = 38245011840. Its totient is φ = 18937740512.

The previous prime is 28545127643. The next prime is 28545127651. The reversal of 28545127647 is 74672154582.

It is an interprime number because it is at equal distance from previous prime (28545127643) and next prime (28545127651).

It is a cyclic number.

It is not a de Polignac number, because 28545127647 - 2² = 28545127643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28545127647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545127643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1748173 + ... + 1764425.

It is an arithmetic number, because the mean of its divisors is an integer number (2390313240).

Almost surely, 2^28545127647 is an apocalyptic number.

28545127647 is a deficient number, since it is larger than the sum of its proper divisors (9699884193).

28545127647 is a wasteful number, since it uses less digits than its factorization.

28545127647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19062.

The product of its digits is 3763200, while the sum is 51.

The spelling of 28545127647 in words is "twenty-eight billion, five hundred forty-five million, one hundred twenty-seven thousand, six hundred forty-seven".