12198155965 has 8 divisors (see below), whose sum is σ = 14645379168. Its totient is φ = 9753463440.

The previous prime is 12198155953. The next prime is 12198155989. The reversal of 12198155965 is 56955189121.

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

It is not a de Polignac number, because 12198155965 - 2¹⁷ = 12198024893 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, 622047 + ... + 641356.

It is an arithmetic number, because the mean of its divisors is an integer number (1830672396).

Almost surely, 2^12198155965 is an apocalyptic number.

It is an amenable number.

12198155965 is a deficient number, since it is larger than the sum of its proper divisors (2447223203).

12198155965 is a wasteful number, since it uses less digits than its factorization.

12198155965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265339.

The product of its digits is 972000, while the sum is 52.

The spelling of 12198155965 in words is "twelve billion, one hundred ninety-eight million, one hundred fifty-five thousand, nine hundred sixty-five".