13123335033550 has 72 divisors (see below), whose sum is σ = 28397804533560. Its totient is φ = 4498923240000.

The previous prime is 13123335033509. The next prime is 13123335033553. The reversal of 13123335033550 is 5533053332131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123335033553) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21824425 + ... + 22417675.

It is an arithmetic number, because the mean of its divisors is an integer number (394413951855).

Almost surely, 2^{13123335033550} is an apocalyptic number.

13123335033550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123335033550 is an abundant number, since it is smaller than the sum of its proper divisors (15274469500010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123335033550 is a wasteful number, since it uses less digits than its factorization.

13123335033550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602306 (or 602294 counting only the distinct ones).

The product of its (nonzero) digits is 182250, while the sum is 37.

Adding to 13123335033550 its reverse (5533053332131), we get a palindrome (18656388365681).

The spelling of 13123335033550 in words is "thirteen trillion, one hundred twenty-three billion, three hundred thirty-five million, thirty-three thousand, five hundred fifty".