123545520433299 has 4 divisors (see below), whose sum is σ = 164727360577736. Its totient is φ = 82363680288864.

The previous prime is 123545520433241. The next prime is 123545520433319. The reversal of 123545520433299 is 992334025545321.

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

It is not a de Polignac number, because 123545520433299 - 2⁸ = 123545520433043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123545520433219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20590920072214 + ... + 20590920072219.

It is an arithmetic number, because the mean of its divisors is an integer number (41181840144434).

Almost surely, 2^{123545520433299} is an apocalyptic number.

123545520433299 is a deficient number, since it is larger than the sum of its proper divisors (41181840144437).

123545520433299 is an equidigital number, since it uses as much as digits as its factorization.

123545520433299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41181840144436.

The product of its (nonzero) digits is 34992000, while the sum is 57.

The spelling of 123545520433299 in words is "one hundred twenty-three trillion, five hundred forty-five billion, five hundred twenty million, four hundred thirty-three thousand, two hundred ninety-nine".