12109173758 has 16 divisors (see below), whose sum is σ = 19888139520. Its totient is φ = 5483856600.

The previous prime is 12109173757. The next prime is 12109173767. The reversal of 12109173758 is 85737190121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12109173757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009568 + ... + 1021491.

It is an arithmetic number, because the mean of its divisors is an integer number (1243008720).

Almost surely, 2^12109173758 is an apocalyptic number.

12109173758 is a deficient number, since it is larger than the sum of its proper divisors (7778965762).

12109173758 is a wasteful number, since it uses less digits than its factorization.

12109173758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031343.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 12109173758 in words is "twelve billion, one hundred nine million, one hundred seventy-three thousand, seven hundred fifty-eight".