13554644645531 has 16 divisors (see below), whose sum is σ = 15178097977056. Its totient is φ = 12000393600000.

The previous prime is 13554644645491. The next prime is 13554644645533.

13554644645531 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 13554644645531 - 2²⁶ = 13554577536667 is a prime.

It is a super-2 number, since 2×13554644645531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13554644645533) 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, 99935510 + ... + 100071051.

It is an arithmetic number, because the mean of its divisors is an integer number (948631123566).

Almost surely, 2^{13554644645531} is an apocalyptic number.

13554644645531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13554644645531 is a deficient number, since it is larger than the sum of its proper divisors (1623453331525).

13554644645531 is a wasteful number, since it uses less digits than its factorization.

13554644645531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200006734.

The product of its digits is 51840000, while the sum is 56.

The spelling of 13554644645531 in words is "thirteen trillion, five hundred fifty-four billion, six hundred forty-four million, six hundred forty-five thousand, five hundred thirty-one".