12154320265 has 8 divisors (see below), whose sum is σ = 14586137280. Its totient is φ = 9722820912.

The previous prime is 12154320259. The next prime is 12154320271. The reversal of 12154320265 is 56202345121.

It is an interprime number because it is at equal distance from previous prime (12154320259) and next prime (12154320271).

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

It is a cyclic number.

It is not a de Polignac number, because 12154320265 - 2⁹ = 12154319753 is a prime.

It is a super-2 number, since 2×12154320265² (a number of 21 digits) contains 22 as substring.

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, 14962 + ... + 156628.

It is an arithmetic number, because the mean of its divisors is an integer number (1823267160).

Almost surely, 2^12154320265 is an apocalyptic number.

It is an amenable number.

12154320265 is a deficient number, since it is larger than the sum of its proper divisors (2431817015).

12154320265 is a wasteful number, since it uses less digits than its factorization.

12154320265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158831.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 12154320265 its reverse (56202345121), we get a palindrome (68356665386).

The spelling of 12154320265 in words is "twelve billion, one hundred fifty-four million, three hundred twenty thousand, two hundred sixty-five".