16111254991 has 8 divisors (see below), whose sum is σ = 18263771120. Its totient is φ = 14089194432.

The previous prime is 16111254983. The next prime is 16111255009. The reversal of 16111254991 is 19945211161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16111254991 - 2³ = 16111254983 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 (16111254941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32613630 + ... + 32614123.

It is an arithmetic number, because the mean of its divisors is an integer number (2282971390).

Almost surely, 2^16111254991 is an apocalyptic number.

16111254991 is a deficient number, since it is larger than the sum of its proper divisors (2152516129).

16111254991 is a wasteful number, since it uses less digits than its factorization.

16111254991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65227785.

The product of its digits is 19440, while the sum is 40.

The spelling of 16111254991 in words is "sixteen billion, one hundred eleven million, two hundred fifty-four thousand, nine hundred ninety-one".