13140343121520 has 160 divisors (see below), whose sum is σ = 40813095419712. Its totient is φ = 3497381871616.

The previous prime is 13140343121497. The next prime is 13140343121569. The reversal of 13140343121520 is 2512134304131.

It is a super-2 number, since 2×13140343121520² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 878533882 + ... + 878548838.

Almost surely, 2^{13140343121520} is an apocalyptic number.

13140343121520 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 13140343121520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20406547709856).

13140343121520 is an abundant number, since it is smaller than the sum of its proper divisors (27672752298192).

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

13140343121520 is a wasteful number, since it uses less digits than its factorization.

13140343121520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21739 (or 21733 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 13140343121520 its reverse (2512134304131), we get a palindrome (15652477425651).

The spelling of 13140343121520 in words is "thirteen trillion, one hundred forty billion, three hundred forty-three million, one hundred twenty-one thousand, five hundred twenty".