13123341432320 has 160 divisors (see below), whose sum is σ = 36054208954368. Its totient is φ = 4487681138688.

The previous prime is 13123341432319. The next prime is 13123341432323. The reversal of 13123341432320 is 2323414332131.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-4 number, since 4×13123341432320⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123341432323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5907317 + ... + 7819403.

Almost surely, 2^{13123341432320} is an apocalyptic number.

13123341432320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123341432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18027104477184).

13123341432320 is an abundant number, since it is smaller than the sum of its proper divisors (22930867522048).

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

13123341432320 is an equidigital number, since it uses as much as digits as its factorization.

13123341432320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912500 (or 1912484 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 13123341432320 its reverse (2323414332131), we get a palindrome (15446755764451).

The spelling of 13123341432320 in words is "thirteen trillion, one hundred twenty-three billion, three hundred forty-one million, four hundred thirty-two thousand, three hundred twenty".