13531551211455 has 32 divisors (see below), whose sum is σ = 21670467840000. Its totient is φ = 7210168428672.

The previous prime is 13531551211427. The next prime is 13531551211457. The reversal of 13531551211455 is 55411215513531.

It is not a de Polignac number, because 13531551211455 - 2⁶ = 13531551211391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531551211457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71767896 + ... + 71956194.

It is an arithmetic number, because the mean of its divisors is an integer number (677202120000).

Almost surely, 2^{13531551211455} is an apocalyptic number.

13531551211455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13531551211455 is a deficient number, since it is larger than the sum of its proper divisors (8138916628545).

13531551211455 is a wasteful number, since it uses less digits than its factorization.

13531551211455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192703.

The product of its digits is 225000, while the sum is 42.

Adding to 13531551211455 its reverse (55411215513531), we get a palindrome (68942766724986).

The spelling of 13531551211455 in words is "thirteen trillion, five hundred thirty-one billion, five hundred fifty-one million, two hundred eleven thousand, four hundred fifty-five".