123330212431545 has 64 divisors (see below), whose sum is σ = 233400179529216. Its totient is φ = 54437359288320.

The previous prime is 123330212431541. The next prime is 123330212431603. The reversal of 123330212431545 is 545134212033321.

It is a happy number.

It is not a de Polignac number, because 123330212431545 - 2² = 123330212431541 is a prime.

It is a super-2 number, since 2×123330212431545² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123330212431541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147253204 + ... + 148088373.

It is an arithmetic number, because the mean of its divisors is an integer number (3646877805144).

Almost surely, 2^{123330212431545} is an apocalyptic number.

123330212431545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123330212431545 is a deficient number, since it is larger than the sum of its proper divisors (110069967097671).

123330212431545 is a wasteful number, since it uses less digits than its factorization.

123330212431545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295341730.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 123330212431545 its reverse (545134212033321), we get a palindrome (668464424464866).

The spelling of 123330212431545 in words is "one hundred twenty-three trillion, three hundred thirty billion, two hundred twelve million, four hundred thirty-one thousand, five hundred forty-five".