123530250533 has 4 divisors (see below), whose sum is σ = 124269952800. Its totient is φ = 122790548268.

The previous prime is 123530250509. The next prime is 123530250601. The reversal of 123530250533 is 335052035321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335052035321 = 71 ⋅4719042751.

It is a cyclic number.

It is not a de Polignac number, because 123530250533 - 2⁶ = 123530250469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123530250533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123530250433) 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 3 ways as a sum of consecutive naturals, for example, 369850883 + ... + 369851216.

It is an arithmetic number, because the mean of its divisors is an integer number (31067488200).

Almost surely, 2^123530250533 is an apocalyptic number.

It is an amenable number.

123530250533 is a deficient number, since it is larger than the sum of its proper divisors (739702267).

123530250533 is an equidigital number, since it uses as much as digits as its factorization.

123530250533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739702266.

The product of its (nonzero) digits is 40500, while the sum is 32.

Adding to 123530250533 its reverse (335052035321), we get a palindrome (458582285854).

The spelling of 123530250533 in words is "one hundred twenty-three billion, five hundred thirty million, two hundred fifty thousand, five hundred thirty-three".