123544005500345 has 48 divisors (see below), whose sum is σ = 160378420220928. Its totient is φ = 91123250359680.

The previous prime is 123544005500309. The next prime is 123544005500353. The reversal of 123544005500345 is 543005500445321.

It is not a de Polignac number, because 123544005500345 - 2¹⁸ = 123544005238201 is a prime.

It is a super-2 number, since 2×123544005500345² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47447480 + ... + 49983510.

It is an arithmetic number, because the mean of its divisors is an integer number (3341217087936).

Almost surely, 2^{123544005500345} is an apocalyptic number.

It is an amenable number.

123544005500345 is a deficient number, since it is larger than the sum of its proper divisors (36834414720583).

123544005500345 is a wasteful number, since it uses less digits than its factorization.

123544005500345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536310 (or 2536203 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 41.

Adding to 123544005500345 its reverse (543005500445321), we get a palindrome (666549505945666).

The spelling of 123544005500345 in words is "one hundred twenty-three trillion, five hundred forty-four billion, five million, five hundred thousand, three hundred forty-five".