123000523645 has 12 divisors (see below), whose sum is σ = 148736055420. Its totient is φ = 97649202560.

The previous prime is 123000523631. The next prime is 123000523669. The reversal of 123000523645 is 546325000321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13501742809 + 109498780836 = 116197^2 + 330906^2 .

It is not a de Polignac number, because 123000523645 - 2¹⁷ = 123000392573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 630940 + ... + 802549.

It is an arithmetic number, because the mean of its divisors is an integer number (12394671285).

Almost surely, 2^123000523645 is an apocalyptic number.

It is an amenable number.

123000523645 is a deficient number, since it is larger than the sum of its proper divisors (25735531775).

123000523645 is an equidigital number, since it uses as much as digits as its factorization.

123000523645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433756 (or 1433625 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 123000523645 its reverse (546325000321), we get a palindrome (669325523966).

The spelling of 123000523645 in words is "one hundred twenty-three billion, five hundred twenty-three thousand, six hundred forty-five".