13143231515455 has 32 divisors (see below), whose sum is σ = 16975554652800. Its totient is φ = 9733327736832.

The previous prime is 13143231515399. The next prime is 13143231515483. The reversal of 13143231515455 is 55451513234131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13143231515455 - 2⁹ = 13143231514943 is a prime.

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, 722500 + ... + 5177689.

It is an arithmetic number, because the mean of its divisors is an integer number (530486082900).

Almost surely, 2^{13143231515455} is an apocalyptic number.

13143231515455 is a deficient number, since it is larger than the sum of its proper divisors (3832323137345).

13143231515455 is a wasteful number, since it uses less digits than its factorization.

13143231515455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900643.

The product of its digits is 540000, while the sum is 43.

Adding to 13143231515455 its reverse (55451513234131), we get a palindrome (68594744749586).

The spelling of 13143231515455 in words is "thirteen trillion, one hundred forty-three billion, two hundred thirty-one million, five hundred fifteen thousand, four hundred fifty-five".