123423822545 has 8 divisors (see below), whose sum is σ = 149575009320. Its totient is φ = 97761443200.

The previous prime is 123423822541. The next prime is 123423822551. The reversal of 123423822545 is 545228324321.

It can be written as a sum of positive squares in 4 ways, for example, as 18328556689 + 105095265856 = 135383^2 + 324184^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123423822545 - 2² = 123423822541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123423822541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122201300 + ... + 122202309.

It is an arithmetic number, because the mean of its divisors is an integer number (18696876165).

Almost surely, 2^123423822545 is an apocalyptic number.

It is an amenable number.

123423822545 is a deficient number, since it is larger than the sum of its proper divisors (26151186775).

123423822545 is a wasteful number, since it uses less digits than its factorization.

123423822545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244403715.

The product of its digits is 460800, while the sum is 41.

The spelling of 123423822545 in words is "one hundred twenty-three billion, four hundred twenty-three million, eight hundred twenty-two thousand, five hundred forty-five".