13123335043128 has 64 divisors (see below), whose sum is σ = 34201984849920. Its totient is φ = 4191419664000.

The previous prime is 13123335043057. The next prime is 13123335043171. The reversal of 13123335043128 is 82134053332131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87246100 + ... + 87396387.

It is an arithmetic number, because the mean of its divisors is an integer number (534406013280).

Almost surely, 2^{13123335043128} is an apocalyptic number.

It is an amenable number.

13123335043128 is an abundant number, since it is smaller than the sum of its proper divisors (21078649806792).

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

13123335043128 is a wasteful number, since it uses less digits than its factorization.

13123335043128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174642628 (or 174642624 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 13123335043128 its reverse (82134053332131), we get a palindrome (95257388375259).

The spelling of 13123335043128 in words is "thirteen trillion, one hundred twenty-three billion, three hundred thirty-five million, forty-three thousand, one hundred twenty-eight".