13133631561 has 8 divisors (see below), whose sum is σ = 17556527040. Its totient is φ = 8733245232.

The previous prime is 13133631551. The next prime is 13133631583. The reversal of 13133631561 is 16513633131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13133631561 - 2¹⁰ = 13133630537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13133631551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5625925 + ... + 5628258.

It is an arithmetic number, because the mean of its divisors is an integer number (2194565880).

Almost surely, 2^13133631561 is an apocalyptic number.

It is an amenable number.

13133631561 is a deficient number, since it is larger than the sum of its proper divisors (4422895479).

13133631561 is a wasteful number, since it uses less digits than its factorization.

13133631561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11254575.

The product of its digits is 14580, while the sum is 33.

The spelling of 13133631561 in words is "thirteen billion, one hundred thirty-three million, six hundred thirty-one thousand, five hundred sixty-one".