12161798135 has 8 divisors (see below), whose sum is σ = 14601019056. Its totient is φ = 9724864320.

The previous prime is 12161798093. The next prime is 12161798171. The reversal of 12161798135 is 53189716121.

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

It is not a de Polignac number, because 12161798135 - 2⁶ = 12161798071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560054 + ... + 581363.

It is an arithmetic number, because the mean of its divisors is an integer number (1825127382).

Almost surely, 2^12161798135 is an apocalyptic number.

12161798135 is a deficient number, since it is larger than the sum of its proper divisors (2439220921).

12161798135 is a wasteful number, since it uses less digits than its factorization.

12161798135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143553.

The product of its digits is 90720, while the sum is 44.

The spelling of 12161798135 in words is "twelve billion, one hundred sixty-one million, seven hundred ninety-eight thousand, one hundred thirty-five".