16554523666534 has 12 divisors (see below), whose sum is σ = 28885954561164. Its totient is φ = 7094795857044.

The previous prime is 16554523666507. The next prime is 16554523666561. The reversal of 16554523666534 is 43566632545561.

It is an interprime number because it is at equal distance from previous prime (16554523666507) and next prime (16554523666561).

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 84461855344 + ... + 84461855539.

It is an arithmetic number, because the mean of its divisors is an integer number (2407162880097).

Almost surely, 2^{16554523666534} is an apocalyptic number.

16554523666534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16554523666534 is a deficient number, since it is larger than the sum of its proper divisors (12331430894630).

16554523666534 is a wasteful number, since it uses less digits than its factorization.

16554523666534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168923710899 (or 168923710892 counting only the distinct ones).

The product of its digits is 233280000, while the sum is 61.

The spelling of 16554523666534 in words is "sixteen trillion, five hundred fifty-four billion, five hundred twenty-three million, six hundred sixty-six thousand, five hundred thirty-four".