123255441032545 has 4 divisors (see below), whose sum is σ = 147906529239060. Its totient is φ = 98604352826032.

The previous prime is 123255441032533. The next prime is 123255441032551. The reversal of 123255441032545 is 545230144552321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21127297445136 + 102128143587409 = 4596444^2 + 10105847^2 .

It is a cyclic number.

It is not a de Polignac number, because 123255441032545 - 2¹⁵ = 123255440999777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123255441032495 and 123255441032504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12325544103250 + ... + 12325544103259.

It is an arithmetic number, because the mean of its divisors is an integer number (36976632309765).

Almost surely, 2^{123255441032545} is an apocalyptic number.

It is an amenable number.

123255441032545 is a deficient number, since it is larger than the sum of its proper divisors (24651088206515).

123255441032545 is an equidigital number, since it uses as much as digits as its factorization.

123255441032545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24651088206514.

The product of its (nonzero) digits is 2880000, while the sum is 46.

Adding to 123255441032545 its reverse (545230144552321), we get a palindrome (668485585584866).

The spelling of 123255441032545 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, four hundred forty-one million, thirty-two thousand, five hundred forty-five".