13143231503540 has 48 divisors (see below), whose sum is σ = 28867335372288. Its totient is φ = 5017100926464.

The previous prime is 13143231503531. The next prime is 13143231503683. The reversal of 13143231503540 is 4530513234131.

13143231503540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13143231503540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32794172 + ... + 33192531.

It is an arithmetic number, because the mean of its divisors is an integer number (601402820256).

Almost surely, 2^{13143231503540} is an apocalyptic number.

13143231503540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13143231503540 is an abundant number, since it is smaller than the sum of its proper divisors (15724103868748).

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

13143231503540 is a wasteful number, since it uses less digits than its factorization.

13143231503540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65987168 (or 65987166 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 13143231503540 its reverse (4530513234131), we get a palindrome (17673744737671).

The spelling of 13143231503540 in words is "thirteen trillion, one hundred forty-three billion, two hundred thirty-one million, five hundred three thousand, five hundred forty".