123345510254345 has 16 divisors (see below), whose sum is σ = 156267184045440. Its totient is φ = 93205515642624.

The previous prime is 123345510254279. The next prime is 123345510254357. The reversal of 123345510254345 is 543452015543321.

It is a cyclic number.

It is not a de Polignac number, because 123345510254345 - 2³⁸ = 123070632347401 is a prime.

It is a super-2 number, since 2×123345510254345² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123345510254345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1926338597 + ... + 1926402626.

It is an arithmetic number, because the mean of its divisors is an integer number (9766699002840).

Almost surely, 2^{123345510254345} is an apocalyptic number.

It is an amenable number.

123345510254345 is a deficient number, since it is larger than the sum of its proper divisors (32921673791095).

123345510254345 is a wasteful number, since it uses less digits than its factorization.

123345510254345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852741584.

The product of its (nonzero) digits is 4320000, while the sum is 47.

Adding to 123345510254345 its reverse (543452015543321), we get a palindrome (666797525797666).

The spelling of 123345510254345 in words is "one hundred twenty-three trillion, three hundred forty-five billion, five hundred ten million, two hundred fifty-four thousand, three hundred forty-five".