123315332040451 has 12 divisors (see below), whose sum is σ = 131000265137520. Its totient is φ = 116057596469120.

The previous prime is 123315332040389. The next prime is 123315332040463. The reversal of 123315332040451 is 154040233513321.

It is a happy number.

It is not a de Polignac number, because 123315332040451 - 2⁷ = 123315332040323 is a prime.

It is a super-2 number, since 2×123315332040451² (a number of 29 digits) contains 22 as substring.

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 123315332040451.

It is not an unprimeable number, because it can be changed into a prime (123315332047451) 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 11 ways as a sum of consecutive naturals, for example, 1494621 + ... + 15775441.

It is an arithmetic number, because the mean of its divisors is an integer number (10916688761460).

Almost surely, 2^{123315332040451} is an apocalyptic number.

123315332040451 is a deficient number, since it is larger than the sum of its proper divisors (7684933097069).

123315332040451 is a wasteful number, since it uses less digits than its factorization.

123315332040451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14310734 (or 14310717 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 123315332040451 its reverse (154040233513321), we get a palindrome (277355565553772).

The spelling of 123315332040451 in words is "one hundred twenty-three trillion, three hundred fifteen billion, three hundred thirty-two million, forty thousand, four hundred fifty-one".