12154407143545 has 16 divisors (see below), whose sum is σ = 14677134640128. Its totient is φ = 9662402527360.

The previous prime is 12154407143539. The next prime is 12154407143573. The reversal of 12154407143545 is 54534170445121.

It is not a de Polignac number, because 12154407143545 - 2³ = 12154407143537 is a prime.

It is a super-2 number, since 2×12154407143545² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12154407143495 and 12154407143504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5815324 + ... + 7624093.

It is an arithmetic number, because the mean of its divisors is an integer number (917320915008).

Almost surely, 2^{12154407143545} is an apocalyptic number.

It is an amenable number.

12154407143545 is a deficient number, since it is larger than the sum of its proper divisors (2522727496583).

12154407143545 is a wasteful number, since it uses less digits than its factorization.

12154407143545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440560.

The product of its (nonzero) digits is 1344000, while the sum is 46.

Adding to 12154407143545 its reverse (54534170445121), we get a palindrome (66688577588666).

The spelling of 12154407143545 in words is "twelve trillion, one hundred fifty-four billion, four hundred seven million, one hundred forty-three thousand, five hundred forty-five".