16551412606123 has 4 divisors (see below), whose sum is σ = 16551432111760. Its totient is φ = 16551393100488.

The previous prime is 16551412606109. The next prime is 16551412606139. The reversal of 16551412606123 is 32160621415561.

16551412606123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16551412606123 is a prime.

It is a super-2 number, since 2×16551412606123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16551412606123.

It is not an unprimeable number, because it can be changed into a prime (16551412606163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8419215 + ... + 10197352.

It is an arithmetic number, because the mean of its divisors is an integer number (4137858027940).

Almost surely, 2^{16551412606123} is an apocalyptic number.

16551412606123 is a deficient number, since it is larger than the sum of its proper divisors (19505637).

16551412606123 is an equidigital number, since it uses as much as digits as its factorization.

16551412606123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19505636.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 16551412606123 in words is "sixteen trillion, five hundred fifty-one billion, four hundred twelve million, six hundred six thousand, one hundred twenty-three".