13134344520 has 128 divisors (see below), whose sum is σ = 43081165440. Its totient is φ = 3176970240.

The previous prime is 13134344519. The next prime is 13134344527. The reversal of 13134344520 is 2544343131.

It is a super-2 number, since 2×13134344520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (13134344527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592354 + ... + 614126.

It is an arithmetic number, because the mean of its divisors is an integer number (336571605).

Almost surely, 2^13134344520 is an apocalyptic number.

13134344520 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 13134344520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21540582720).

13134344520 is an abundant number, since it is smaller than the sum of its proper divisors (29946820920).

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

13134344520 is a wasteful number, since it uses less digits than its factorization.

13134344520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22255 (or 22251 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 13134344520 its reverse (2544343131), we get a palindrome (15678687651).

The spelling of 13134344520 in words is "thirteen billion, one hundred thirty-four million, three hundred forty-four thousand, five hundred twenty".