123044215504051 has 4 divisors (see below), whose sum is σ = 123096776042704. Its totient is φ = 122991654965400.

The previous prime is 123044215504031. The next prime is 123044215504081. The reversal of 123044215504051 is 150405512440321.

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

It is a cyclic number.

It is not a de Polignac number, because 123044215504051 - 2¹⁷ = 123044215372979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123044215504051.

It is not an unprimeable number, because it can be changed into a prime (123044215504031) 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, 26280265815 + ... + 26280270496.

It is an arithmetic number, because the mean of its divisors is an integer number (30774194010676).

Almost surely, 2^{123044215504051} is an apocalyptic number.

123044215504051 is a deficient number, since it is larger than the sum of its proper divisors (52560538653).

123044215504051 is an equidigital number, since it uses as much as digits as its factorization.

123044215504051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52560538652.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 123044215504051 its reverse (150405512440321), we get a palindrome (273449727944372).

The spelling of 123044215504051 in words is "one hundred twenty-three trillion, forty-four billion, two hundred fifteen million, five hundred four thousand, fifty-one".