28555484376847 has 2 divisors, whose sum is σ = 28555484376848. Its totient is φ = 28555484376846.

The previous prime is 28555484376833. The next prime is 28555484376857. The reversal of 28555484376847 is 74867348455582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28555484376847 - 2⁴³ = 19759391354639 is a prime.

It is a super-2 number, since 2×28555484376847² (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 (28555484376857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14277742188423 + 14277742188424.

It is an arithmetic number, because the mean of its divisors is an integer number (14277742188424).

Almost surely, 2^{28555484376847} is an apocalyptic number.

28555484376847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28555484376847 is an equidigital number, since it uses as much as digits as its factorization.

28555484376847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7225344000, while the sum is 76.

The spelling of 28555484376847 in words is "twenty-eight trillion, five hundred fifty-five billion, four hundred eighty-four million, three hundred seventy-six thousand, eight hundred forty-seven".