123015312445113 has 36 divisors (see below), whose sum is σ = 195324456720484. Its totient is φ = 74549526638400.

The previous prime is 123015312445099. The next prime is 123015312445127. The reversal of 123015312445113 is 311544213510321.

123015312445113 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 1 + 531 + 2 + 4 + 4 + 5 + 113 = 666.

It is an interprime number because it is at equal distance from previous prime (123015312445099) and next prime (123015312445127).

It can be written as a sum of positive squares in 2 ways, for example, as 60465989376144 + 62549323068969 = 7775988^2 + 7908813^2 .

It is not a de Polignac number, because 123015312445113 - 2⁶ = 123015312445049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123015312445313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11678931 + ... + 19555767.

Almost surely, 2^{123015312445113} is an apocalyptic number.

It is an amenable number.

123015312445113 is a deficient number, since it is larger than the sum of its proper divisors (72309144275371).

123015312445113 is a wasteful number, since it uses less digits than its factorization.

123015312445113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891206 (or 7891192 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 123015312445113 its reverse (311544213510321), we get a palindrome (434559525955434).

The spelling of 123015312445113 in words is "one hundred twenty-three trillion, fifteen billion, three hundred twelve million, four hundred forty-five thousand, one hundred thirteen".