16109125331 has 4 divisors (see below), whose sum is σ = 17348288832. Its totient is φ = 14869961832.

The previous prime is 16109125313. The next prime is 16109125337. The reversal of 16109125331 is 13352190161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13352190161 = 23 ⋅580530007.

It is a cyclic number.

It is not a de Polignac number, because 16109125331 - 2⁶ = 16109125267 is a prime.

It is a super-2 number, since 2×16109125331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16109125337) 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 3 ways as a sum of consecutive naturals, for example, 619581731 + ... + 619581756.

It is an arithmetic number, because the mean of its divisors is an integer number (4337072208).

Almost surely, 2^16109125331 is an apocalyptic number.

16109125331 is a deficient number, since it is larger than the sum of its proper divisors (1239163501).

16109125331 is a wasteful number, since it uses less digits than its factorization.

16109125331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239163500.

The product of its (nonzero) digits is 4860, while the sum is 32.

The spelling of 16109125331 in words is "sixteen billion, one hundred nine million, one hundred twenty-five thousand, three hundred thirty-one".