16155538554017 has 16 divisors (see below), whose sum is σ = 17112807429120. Its totient is φ = 15209135625600.

The previous prime is 16155538554013. The next prime is 16155538554019. The reversal of 16155538554017 is 71045583555161.

It is a happy number.

It is not a de Polignac number, because 16155538554017 - 2² = 16155538554013 is a prime.

It is a super-2 number, since 2×16155538554017² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16155538554013) 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, 1122767 + ... + 5794107.

It is an arithmetic number, because the mean of its divisors is an integer number (1069550464320).

Almost surely, 2^{16155538554017} is an apocalyptic number.

It is an amenable number.

16155538554017 is a deficient number, since it is larger than the sum of its proper divisors (957268875103).

16155538554017 is a wasteful number, since it uses less digits than its factorization.

16155538554017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672504.

The product of its (nonzero) digits is 12600000, while the sum is 56.

The spelling of 16155538554017 in words is "sixteen trillion, one hundred fifty-five billion, five hundred thirty-eight million, five hundred fifty-four thousand, seventeen".