16551454511146 has 16 divisors (see below), whose sum is σ = 24831085321224. Its totient is φ = 8274426200064.

The previous prime is 16551454511021. The next prime is 16551454511159. The reversal of 16551454511146 is 64111545415561.

It can be written as a sum of positive squares in 4 ways, for example, as 14021093025625 + 2530361485521 = 3744475^2 + 1590711^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16551454511146.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511573306 + ... + 511605658.

Almost surely, 2^{16551454511146} is an apocalyptic number.

16551454511146 is a deficient number, since it is larger than the sum of its proper divisors (8279630810078).

16551454511146 is a wasteful number, since it uses less digits than its factorization.

16551454511146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64665.

The product of its digits is 1440000, while the sum is 49.

The spelling of 16551454511146 in words is "sixteen trillion, five hundred fifty-one billion, four hundred fifty-four million, five hundred eleven thousand, one hundred forty-six".