13554645531 has 16 divisors (see below), whose sum is σ = 21076224000. Its totient is φ = 7745511144.

The previous prime is 13554645521. The next prime is 13554645553.

It is a happy number.

13554645531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13554645531 - 2¹¹ = 13554643483 is a prime.

It is a super-2 number, since 2×13554645531² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13554645521) 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, 6585291 + ... + 6587348.

It is an arithmetic number, because the mean of its divisors is an integer number (1317264000).

Almost surely, 2^13554645531 is an apocalyptic number.

13554645531 is a deficient number, since it is larger than the sum of its proper divisors (7521578469).

13554645531 is an equidigital number, since it uses as much as digits as its factorization.

13554645531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13172663 (or 13172649 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The spelling of 13554645531 in words is "thirteen billion, five hundred fifty-four million, six hundred forty-five thousand, five hundred thirty-one".