123354241545 has 16 divisors (see below), whose sum is σ = 197426117952. Its totient is φ = 65769151680.

The previous prime is 123354241531. The next prime is 123354241547. The reversal of 123354241545 is 545142453321.

It is not a de Polignac number, because 123354241545 - 2⁸ = 123354241289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123354241547) 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, 1184442 + ... + 1284371.

It is an arithmetic number, because the mean of its divisors is an integer number (12339132372).

Almost surely, 2^123354241545 is an apocalyptic number.

123354241545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123354241545 is a deficient number, since it is larger than the sum of its proper divisors (74071876407).

123354241545 is a wasteful number, since it uses less digits than its factorization.

123354241545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472152.

The product of its digits is 288000, while the sum is 39.

Adding to 123354241545 its reverse (545142453321), we get a palindrome (668496694866).

The spelling of 123354241545 in words is "one hundred twenty-three billion, three hundred fifty-four million, two hundred forty-one thousand, five hundred forty-five".