16356544487 has 2 divisors, whose sum is σ = 16356544488. Its totient is φ = 16356544486.

The previous prime is 16356544429. The next prime is 16356544489. The reversal of 16356544487 is 78444565361.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16356544487 - 2⁶ = 16356544423 is a prime.

Together with 16356544489, 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 (16356544489) 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, 8178272243 + 8178272244.

It is an arithmetic number, because the mean of its divisors is an integer number (8178272244).

Almost surely, 2^16356544487 is an apocalyptic number.

16356544487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16356544487 is an equidigital number, since it uses as much as digits as its factorization.

16356544487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9676800, while the sum is 53.

The spelling of 16356544487 in words is "sixteen billion, three hundred fifty-six million, five hundred forty-four thousand, four hundred eighty-seven".