631555643414241 has 64 divisors (see below), whose sum is σ = 1152322671360000. Its totient is φ = 332906015873088.

The previous prime is 631555643414191. The next prime is 631555643414249. The reversal of 631555643414241 is 142414346555136.

It is a happy number.

631555643414241 is a `hidden beast` number, since 6 + 3 + 1 + 5 + 5 + 56 + 4 + 341 + 4 + 241 = 666.

It is not a de Polignac number, because 631555643414241 - 2⁶ = 631555643414177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631555643414249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82055251 + ... + 89421336.

It is an arithmetic number, because the mean of its divisors is an integer number (18005041740000).

Almost surely, 2^{631555643414241} is an apocalyptic number.

It is an amenable number.

631555643414241 is a deficient number, since it is larger than the sum of its proper divisors (520767027945759).

631555643414241 is a wasteful number, since it uses less digits than its factorization.

631555643414241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171478115 (or 171478109 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

Adding to 631555643414241 its reverse (142414346555136), we get a palindrome (773969989969377).

The spelling of 631555643414241 in words is "six hundred thirty-one trillion, five hundred fifty-five billion, six hundred forty-three million, four hundred fourteen thousand, two hundred forty-one".