13256154134240 has 24 divisors (see below), whose sum is σ = 31317664142520. Its totient is φ = 5302461653632.

The previous prime is 13256154134233. The next prime is 13256154134287. The reversal of 13256154134240 is 4243145165231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41425481510 + ... + 41425481829.

It is an arithmetic number, because the mean of its divisors is an integer number (1304902672605).

Almost surely, 2^{13256154134240} is an apocalyptic number.

13256154134240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13256154134240 is an abundant number, since it is smaller than the sum of its proper divisors (18061510008280).

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

13256154134240 is an equidigital number, since it uses as much as digits as its factorization.

13256154134240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82850963354 (or 82850963346 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 13256154134240 its reverse (4243145165231), we get a palindrome (17499299299471).

The spelling of 13256154134240 in words is "thirteen trillion, two hundred fifty-six billion, one hundred fifty-four million, one hundred thirty-four thousand, two hundred forty".