13554445531 has 24 divisors (see below), whose sum is σ = 15082678800. Its totient is φ = 12170664000.

The previous prime is 13554445529. The next prime is 13554445561.

13554445531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13554445531 - 2¹ = 13554445529 is a prime.

It is a super-2 number, since 2×13554445531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13554445561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6219400 + ... + 6221578.

It is an arithmetic number, because the mean of its divisors is an integer number (628444950).

Almost surely, 2^13554445531 is an apocalyptic number.

13554445531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13554445531 is a deficient number, since it is larger than the sum of its proper divisors (1528233269).

13554445531 is a wasteful number, since it uses less digits than its factorization.

13554445531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811 (or 2800 counting only the distinct ones).

The product of its digits is 360000, while the sum is 40.

The spelling of 13554445531 in words is "thirteen billion, five hundred fifty-four million, four hundred forty-five thousand, five hundred thirty-one".