133631513641 has 16 divisors (see below), whose sum is σ = 146462515200. Its totient is φ = 121358180608.

The previous prime is 133631513633. The next prime is 133631513681. The reversal of 133631513641 is 146315136331.

It is a cyclic number.

It is not a de Polignac number, because 133631513641 - 2³ = 133631513633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133631513641.

It is not an unprimeable number, because it can be changed into a prime (133631513681) 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, 714456 + ... + 881878.

It is an arithmetic number, because the mean of its divisors is an integer number (9153907200).

Almost surely, 2^133631513641 is an apocalyptic number.

It is an amenable number.

133631513641 is a deficient number, since it is larger than the sum of its proper divisors (12831001559).

133631513641 is a wasteful number, since it uses less digits than its factorization.

133631513641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169088.

The product of its digits is 58320, while the sum is 37.

Adding to 133631513641 its reverse (146315136331), we get a palindrome (279946649972).

The spelling of 133631513641 in words is "one hundred thirty-three billion, six hundred thirty-one million, five hundred thirteen thousand, six hundred forty-one".