16540009259 has 2 divisors, whose sum is σ = 16540009260. Its totient is φ = 16540009258.

The previous prime is 16540009243. The next prime is 16540009261. The reversal of 16540009259 is 95290004561.

It is a strong prime.

It is an emirp because it is prime and its reverse (95290004561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16540009259 - 2⁴ = 16540009243 is a prime.

It is a super-3 number, since 3×16540009259³ (a number of 32 digits) contains 333 as substring.

Together with 16540009261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16540009229) 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 as a sum of consecutive naturals, namely, 8270004629 + 8270004630.

It is an arithmetic number, because the mean of its divisors is an integer number (8270004630).

Almost surely, 2^16540009259 is an apocalyptic number.

16540009259 is a deficient number, since it is larger than the sum of its proper divisors (1).

16540009259 is an equidigital number, since it uses as much as digits as its factorization.

16540009259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 16540009259 in words is "sixteen billion, five hundred forty million, nine thousand, two hundred fifty-nine".