12154466512155 has 16 divisors (see below), whose sum is σ = 21215068821504. Its totient is φ = 5893074672480.

The previous prime is 12154466512109. The next prime is 12154466512159. The reversal of 12154466512155 is 55121566445121.

It is not a de Polignac number, because 12154466512155 - 2²⁰ = 12154465463579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12154466512159) 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, 36831716539 + ... + 36831716868.

It is an arithmetic number, because the mean of its divisors is an integer number (1325941801344).

Almost surely, 2^{12154466512155} is an apocalyptic number.

12154466512155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12154466512155 is a deficient number, since it is larger than the sum of its proper divisors (9060602309349).

12154466512155 is a wasteful number, since it uses less digits than its factorization.

12154466512155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73663433426.

The product of its digits is 1440000, while the sum is 48.

It can be divided in two parts, 12154466 and 512155, that added together give a palindrome (12666621).

The spelling of 12154466512155 in words is "twelve trillion, one hundred fifty-four billion, four hundred sixty-six million, five hundred twelve thousand, one hundred fifty-five".