28001554519 has 2 divisors, whose sum is σ = 28001554520. Its totient is φ = 28001554518.

The previous prime is 28001554517. The next prime is 28001554523. The reversal of 28001554519 is 91545510082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28001554519 - 2¹ = 28001554517 is a prime.

It is a super-2 number, since 2×28001554519² (a number of 22 digits) contains 22 as substring.

Together with 28001554517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28001554517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14000777259 + 14000777260.

It is an arithmetic number, because the mean of its divisors is an integer number (14000777260).

Almost surely, 2^28001554519 is an apocalyptic number.

28001554519 is a deficient number, since it is larger than the sum of its proper divisors (1).

28001554519 is an equidigital number, since it uses as much as digits as its factorization.

28001554519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 28001554519 in words is "twenty-eight billion, one million, five hundred fifty-four thousand, five hundred nineteen".