28872887171543 has 2 divisors, whose sum is σ = 28872887171544. Its totient is φ = 28872887171542.

The previous prime is 28872887171537. The next prime is 28872887171599. The reversal of 28872887171543 is 34517178827882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28872887171543 - 2⁸ = 28872887171287 is a prime.

It is a super-2 number, since 2×28872887171543² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28872887171503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14436443585771 + 14436443585772.

It is an arithmetic number, because the mean of its divisors is an integer number (14436443585772).

Almost surely, 2^{28872887171543} is an apocalyptic number.

28872887171543 is a deficient number, since it is larger than the sum of its proper divisors (1).

28872887171543 is an equidigital number, since it uses as much as digits as its factorization.

28872887171543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 337182720, while the sum is 71.

The spelling of 28872887171543 in words is "twenty-eight trillion, eight hundred seventy-two billion, eight hundred eighty-seven million, one hundred seventy-one thousand, five hundred forty-three".