16555266460387 has 2 divisors, whose sum is σ = 16555266460388. Its totient is φ = 16555266460386.

The previous prime is 16555266460301. The next prime is 16555266460417. The reversal of 16555266460387 is 78306466255561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16555266460387 is a prime.

It is not a weakly prime, because it can be changed into another prime (16555266470387) 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, 8277633230193 + 8277633230194.

It is an arithmetic number, because the mean of its divisors is an integer number (8277633230194).

Almost surely, 2^{16555266460387} is an apocalyptic number.

16555266460387 is a deficient number, since it is larger than the sum of its proper divisors (1).

16555266460387 is an equidigital number, since it uses as much as digits as its factorization.

16555266460387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728000, while the sum is 64.

The spelling of 16555266460387 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-six million, four hundred sixty thousand, three hundred eighty-seven".