13553544535531 has 16 divisors (see below), whose sum is σ = 18197766091008. Its totient is φ = 9748803261600.

The previous prime is 13553544535513. The next prime is 13553544535543.

13553544535531 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-13553544535531 is a prime.

It is a super-2 number, since 2×13553544535531² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13553544535631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6770001265 + ... + 6770003266.

It is an arithmetic number, because the mean of its divisors is an integer number (1137360380688).

Almost surely, 2^{13553544535531} is an apocalyptic number.

13553544535531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13553544535531 is a deficient number, since it is larger than the sum of its proper divisors (4644221555477).

13553544535531 is a wasteful number, since it uses less digits than its factorization.

13553544535531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540004562.

The product of its digits is 20250000, while the sum is 52.

The spelling of 13553544535531 in words is "thirteen trillion, five hundred fifty-three billion, five hundred forty-four million, five hundred thirty-five thousand, five hundred thirty-one".