16554403982487 has 32 divisors (see below), whose sum is σ = 25942594163200. Its totient is φ = 9191537970048.

The previous prime is 16554403982471. The next prime is 16554403982521. The reversal of 16554403982487 is 78428930445561.

It is not a de Polignac number, because 16554403982487 - 2⁴ = 16554403982471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554403982407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13840912 + ... + 14989317.

It is an arithmetic number, because the mean of its divisors is an integer number (810706067600).

It is a 1-persistent number, because it is pandigital, but 2⋅16554403982487 = 33108807964974 is not.

Almost surely, 2^{16554403982487} is an apocalyptic number.

16554403982487 is a deficient number, since it is larger than the sum of its proper divisors (9388190180713).

16554403982487 is a wasteful number, since it uses less digits than its factorization.

16554403982487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28831015.

The product of its (nonzero) digits is 232243200, while the sum is 66.

The spelling of 16554403982487 in words is "sixteen trillion, five hundred fifty-four billion, four hundred three million, nine hundred eighty-two thousand, four hundred eighty-seven".