13123414125550 has 48 divisors (see below), whose sum is σ = 25520877139680. Its totient is φ = 5011267437440.

The previous prime is 13123414125529. The next prime is 13123414125589. The reversal of 13123414125550 is 5552141432131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10624537 + ... + 11795236.

It is an arithmetic number, because the mean of its divisors is an integer number (531684940410).

Almost surely, 2^{13123414125550} is an apocalyptic number.

13123414125550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123414125550 is a deficient number, since it is larger than the sum of its proper divisors (12397463014130).

13123414125550 is a wasteful number, since it uses less digits than its factorization.

13123414125550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22420317 (or 22420312 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 13123414125550 its reverse (5552141432131), we get a palindrome (18675555557681).

The spelling of 13123414125550 in words is "thirteen trillion, one hundred twenty-three billion, four hundred fourteen million, one hundred twenty-five thousand, five hundred fifty".