12191935479 has 8 divisors (see below), whose sum is σ = 16257035760. Its totient is φ = 8127396096.

The previous prime is 12191935477. The next prime is 12191935499. The reversal of 12191935479 is 97453919121.

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

It is not a de Polignac number, because 12191935479 - 2¹ = 12191935477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191935477) 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, 86572 + ... + 178545.

It is an arithmetic number, because the mean of its divisors is an integer number (2032129470).

Almost surely, 2^12191935479 is an apocalyptic number.

12191935479 is a deficient number, since it is larger than the sum of its proper divisors (4065100281).

12191935479 is a wasteful number, since it uses less digits than its factorization.

12191935479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280449.

The product of its digits is 612360, while the sum is 51.

The spelling of 12191935479 in words is "twelve billion, one hundred ninety-one million, nine hundred thirty-five thousand, four hundred seventy-nine".