16541454487 has 2 divisors, whose sum is σ = 16541454488. Its totient is φ = 16541454486.

The previous prime is 16541454463. The next prime is 16541454521. The reversal of 16541454487 is 78445414561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16541454487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16541454487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16541454407) 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, 8270727243 + 8270727244.

It is an arithmetic number, because the mean of its divisors is an integer number (8270727244).

Almost surely, 2^16541454487 is an apocalyptic number.

16541454487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16541454487 is an equidigital number, since it uses as much as digits as its factorization.

16541454487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2150400, while the sum is 49.

The spelling of 16541454487 in words is "sixteen billion, five hundred forty-one million, four hundred fifty-four thousand, four hundred eighty-seven".