28255502479 has 2 divisors, whose sum is σ = 28255502480. Its totient is φ = 28255502478.

The previous prime is 28255502423. The next prime is 28255502543. The reversal of 28255502479 is 97420555282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28255502479 - 2¹³ = 28255494287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28255502419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14127751239 + 14127751240.

It is an arithmetic number, because the mean of its divisors is an integer number (14127751240).

Almost surely, 2^28255502479 is an apocalyptic number.

28255502479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28255502479 is an equidigital number, since it uses as much as digits as its factorization.

28255502479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 28255502479 in words is "twenty-eight billion, two hundred fifty-five million, five hundred two thousand, four hundred seventy-nine".