16111111104989 has 4 divisors (see below), whose sum is σ = 16112212583424. Its totient is φ = 16110009626556.

The previous prime is 16111111104941. The next prime is 16111111105021. The reversal of 16111111104989 is 98940111111161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16111111104989 - 2¹⁶ = 16111111039453 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 (16111111104289) 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, 550717277 + ... + 550746530.

It is an arithmetic number, because the mean of its divisors is an integer number (4028053145856).

Almost surely, 2^{16111111104989} is an apocalyptic number.

It is an amenable number.

16111111104989 is a deficient number, since it is larger than the sum of its proper divisors (1101478435).

16111111104989 is a wasteful number, since it uses less digits than its factorization.

16111111104989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101478434.

The product of its (nonzero) digits is 15552, while the sum is 44.

The spelling of 16111111104989 in words is "sixteen trillion, one hundred eleven billion, one hundred eleven million, one hundred four thousand, nine hundred eighty-nine".