16554615121127 has 16 divisors (see below), whose sum is σ = 17459149553664. Its totient is φ = 15673508424000.

The previous prime is 16554615121117. The next prime is 16554615121237. The reversal of 16554615121127 is 72112151645561.

It is a cyclic number.

It is not a de Polignac number, because 16554615121127 - 2¹⁴ = 16554615104743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554615121117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1419602 + ... + 5926592.

It is an arithmetic number, because the mean of its divisors is an integer number (1091196847104).

Almost surely, 2^{16554615121127} is an apocalyptic number.

16554615121127 is a deficient number, since it is larger than the sum of its proper divisors (904534432537).

16554615121127 is a wasteful number, since it uses less digits than its factorization.

16554615121127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509590.

The product of its digits is 504000, while the sum is 47.

Adding to 16554615121127 its reverse (72112151645561), we get a palindrome (88666766766688).

The spelling of 16554615121127 in words is "sixteen trillion, five hundred fifty-four billion, six hundred fifteen million, one hundred twenty-one thousand, one hundred twenty-seven".