16504105127 has 4 divisors (see below), whose sum is σ = 16515903600. Its totient is φ = 16492306656.

The previous prime is 16504105099. The next prime is 16504105169. The reversal of 16504105127 is 72150140561.

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

It is a cyclic number.

It is not a de Polignac number, because 16504105127 - 2¹⁴ = 16504088743 is a prime.

It is a super-2 number, since 2×16504105127² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16504105093 and 16504105102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16504105187) 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, 5897138 + ... + 5899935.

It is an arithmetic number, because the mean of its divisors is an integer number (4128975900).

Almost surely, 2^16504105127 is an apocalyptic number.

16504105127 is a deficient number, since it is larger than the sum of its proper divisors (11798473).

16504105127 is a wasteful number, since it uses less digits than its factorization.

16504105127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11798472.

The product of its (nonzero) digits is 8400, while the sum is 32.

Adding to 16504105127 its reverse (72150140561), we get a palindrome (88654245688).

The spelling of 16504105127 in words is "sixteen billion, five hundred four million, one hundred five thousand, one hundred twenty-seven".