15818509151 has 2 divisors, whose sum is σ = 15818509152. Its totient is φ = 15818509150.

The previous prime is 15818509121. The next prime is 15818509153. The reversal of 15818509151 is 15190581851.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15818509151 is a prime.

Together with 15818509153, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15818509153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7909254575 + 7909254576.

It is an arithmetic number, because the mean of its divisors is an integer number (7909254576).

Almost surely, 2^15818509151 is an apocalyptic number.

15818509151 is a deficient number, since it is larger than the sum of its proper divisors (1).

15818509151 is an equidigital number, since it uses as much as digits as its factorization.

15818509151 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 44.

The spelling of 15818509151 in words is "fifteen billion, eight hundred eighteen million, five hundred nine thousand, one hundred fifty-one".