16551161627511 has 48 divisors (see below), whose sum is σ = 26744247621888. Its totient is φ = 8917561900800.

The previous prime is 16551161627509. The next prime is 16551161627521. The reversal of 16551161627511 is 11572616115561.

It is not a de Polignac number, because 16551161627511 - 2¹ = 16551161627509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16551161627521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3573970 + ... + 6773151.

It is an arithmetic number, because the mean of its divisors is an integer number (557171825456).

Almost surely, 2^{16551161627511} is an apocalyptic number.

16551161627511 is a deficient number, since it is larger than the sum of its proper divisors (10193085994377).

16551161627511 is a wasteful number, since it uses less digits than its factorization.

16551161627511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10347380 (or 10347361 counting only the distinct ones).

The product of its digits is 378000, while the sum is 48.

The spelling of 16551161627511 in words is "sixteen trillion, five hundred fifty-one billion, one hundred sixty-one million, six hundred twenty-seven thousand, five hundred eleven".