123352220545 has 8 divisors (see below), whose sum is σ = 151632973800. Its totient is φ = 96274903680.

The previous prime is 123352220491. The next prime is 123352220581. The reversal of 123352220545 is 545022253321.

It can be written as a sum of positive squares in 4 ways, for example, as 2243348496 + 121108872049 = 47364^2 + 348007^2 .

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

It is not a de Polignac number, because 123352220545 - 2¹⁷ = 123352089473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123352220545.

It is an unprimeable number.

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, 300858870 + ... + 300859279.

It is an arithmetic number, because the mean of its divisors is an integer number (18954121725).

Almost surely, 2^123352220545 is an apocalyptic number.

It is an amenable number.

123352220545 is a deficient number, since it is larger than the sum of its proper divisors (28280753255).

123352220545 is an equidigital number, since it uses as much as digits as its factorization.

123352220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601718195.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 123352220545 its reverse (545022253321), we get a palindrome (668374473866).

The spelling of 123352220545 in words is "one hundred twenty-three billion, three hundred fifty-two million, two hundred twenty thousand, five hundred forty-five".