16555272577317 has 6 divisors (see below), whose sum is σ = 23913171500582. Its totient is φ = 11036848384872.

The previous prime is 16555272577289. The next prime is 16555272577399. The reversal of 16555272577317 is 71377527255561.

16555272577317 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 5 + 27 + 2 + 577 + 31 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14686170720516 + 1869101856801 = 3832254^2 + 1367151^2 .

It is not a de Polignac number, because 16555272577317 - 2³¹ = 16553125093669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16555272507317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 919737365398 + ... + 919737365415.

Almost surely, 2^{16555272577317} is an apocalyptic number.

It is an amenable number.

16555272577317 is a deficient number, since it is larger than the sum of its proper divisors (7357898923265).

16555272577317 is a wasteful number, since it uses less digits than its factorization.

16555272577317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839474730819 (or 1839474730816 counting only the distinct ones).

The product of its digits is 108045000, while the sum is 63.

The spelling of 16555272577317 in words is "sixteen trillion, five hundred fifty-five billion, two hundred seventy-two million, five hundred seventy-seven thousand, three hundred seventeen".