13163126423640 has 256 divisors, whose sum is σ = 43289769600000. Its totient is φ = 3189200652288.

The previous prime is 13163126423609. The next prime is 13163126423647. The reversal of 13163126423640 is 4632462136131.

13163126423640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13163126423592 and 13163126423601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163126423647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9183829 + ... + 10519931.

It is an arithmetic number, because the mean of its divisors is an integer number (169100662500).

Almost surely, 2^{13163126423640} is an apocalyptic number.

13163126423640 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 13163126423640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21644884800000).

13163126423640 is an abundant number, since it is smaller than the sum of its proper divisors (30126643176360).

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

13163126423640 is a wasteful number, since it uses less digits than its factorization.

13163126423640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336314 (or 1336310 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

Adding to 13163126423640 its reverse (4632462136131), we get a palindrome (17795588559771).

The spelling of 13163126423640 in words is "thirteen trillion, one hundred sixty-three billion, one hundred twenty-six million, four hundred twenty-three thousand, six hundred forty".