13120140432340 has 12 divisors (see below), whose sum is σ = 27552294907956. Its totient is φ = 5248056172928.

The previous prime is 13120140432317. The next prime is 13120140432341. The reversal of 13120140432340 is 4323404102131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7697361945744 + 5422778486596 = 2774412^2 + 2328686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13120140432299 and 13120140432308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120140432341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328003510789 + ... + 328003510828.

It is an arithmetic number, because the mean of its divisors is an integer number (2296024575663).

Almost surely, 2^{13120140432340} is an apocalyptic number.

13120140432340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120140432340 is an abundant number, since it is smaller than the sum of its proper divisors (14432154475616).

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

13120140432340 is a wasteful number, since it uses less digits than its factorization.

13120140432340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656007021626 (or 656007021624 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 13120140432340 its reverse (4323404102131), we get a palindrome (17443544534471).

The spelling of 13120140432340 in words is "thirteen trillion, one hundred twenty billion, one hundred forty million, four hundred thirty-two thousand, three hundred forty".