135631052361 has 24 divisors (see below), whose sum is σ = 224291056704. Its totient is φ = 77367705120.

The previous prime is 135631052357. The next prime is 135631052363. The reversal of 135631052361 is 163250136531.

135631052361 is a `hidden beast` number, since 1 + 3 + 5 + 63 + 10 + 523 + 61 = 666.

It is not a de Polignac number, because 135631052361 - 2² = 135631052357 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135631052363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1849206 + ... + 1921151.

It is an arithmetic number, because the mean of its divisors is an integer number (9345460696).

Almost surely, 2^135631052361 is an apocalyptic number.

It is an amenable number.

135631052361 is a deficient number, since it is larger than the sum of its proper divisors (88660004343).

135631052361 is a wasteful number, since it uses less digits than its factorization.

135631052361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770941 (or 3770938 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

Adding to 135631052361 its reverse (163250136531), we get a palindrome (298881188892).

The spelling of 135631052361 in words is "one hundred thirty-five billion, six hundred thirty-one million, fifty-two thousand, three hundred sixty-one".