12117953926 has 32 divisors (see below), whose sum is σ = 20901323520. Its totient is φ = 5225308704.

The previous prime is 12117953921. The next prime is 12117953941. The reversal of 12117953926 is 62935971121.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117953921) 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, 209916 + ... + 261343.

It is an arithmetic number, because the mean of its divisors is an integer number (653166360).

Almost surely, 2^12117953926 is an apocalyptic number.

12117953926 is a deficient number, since it is larger than the sum of its proper divisors (8783369594).

12117953926 is a wasteful number, since it uses less digits than its factorization.

12117953926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471340.

The product of its digits is 204120, while the sum is 46.

The spelling of 12117953926 in words is "twelve billion, one hundred seventeen million, nine hundred fifty-three thousand, nine hundred twenty-six".