13631004223661 has 16 divisors (see below), whose sum is σ = 15151933509120. Its totient is φ = 12157069129920.

The previous prime is 13631004223657. The next prime is 13631004223663. The reversal of 13631004223661 is 16632240013631.

13631004223661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13631004223661 - 2² = 13631004223657 is a prime.

It is a super-2 number, since 2×13631004223661² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13631004223663) 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, 6652991 + ... + 8457203.

It is an arithmetic number, because the mean of its divisors is an integer number (946995844320).

Almost surely, 2^{13631004223661} is an apocalyptic number.

13631004223661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13631004223661 is a deficient number, since it is larger than the sum of its proper divisors (1520929285459).

13631004223661 is a wasteful number, since it uses less digits than its factorization.

13631004223661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817236.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 13631004223661 in words is "thirteen trillion, six hundred thirty-one billion, four million, two hundred twenty-three thousand, six hundred sixty-one".