123304500553 has 16 divisors (see below), whose sum is σ = 136510938256. Its totient is φ = 110635683840.

The previous prime is 123304500503. The next prime is 123304500559. The reversal of 123304500553 is 355005403321.

It can be written as a sum of positive squares in 8 ways, for example, as 40641350409 + 82663150144 = 201597^2 + 287512^2 .

It is a cyclic number.

It is not a de Polignac number, because 123304500553 - 2⁹ = 123304500041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123304500559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372793 + ... + 620953.

It is an arithmetic number, because the mean of its divisors is an integer number (8531933641).

Almost surely, 2^123304500553 is an apocalyptic number.

123304500553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123304500553 is a deficient number, since it is larger than the sum of its proper divisors (13206437703).

123304500553 is a wasteful number, since it uses less digits than its factorization.

123304500553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249244.

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 123304500553 its reverse (355005403321), we get a palindrome (478309903874).

The spelling of 123304500553 in words is "one hundred twenty-three billion, three hundred four million, five hundred thousand, five hundred fifty-three".