6531646141 has 2 divisors, whose sum is σ = 6531646142. Its totient is φ = 6531646140.

The previous prime is 6531646117. The next prime is 6531646157. The reversal of 6531646141 is 1416461356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6530256100 + 1390041 = 80810^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531646141 - 2¹⁹ = 6531121853 is a prime.

It is a super-2 number, since 2×6531646141² = 85324802622480383762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6531646141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6531646181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265823070 + 3265823071.

It is an arithmetic number, because the mean of its divisors is an integer number (3265823071).

Almost surely, 2^6531646141 is an apocalyptic number.

It is an amenable number.

6531646141 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531646141 is an equidigital number, since it uses as much as digits as its factorization.

6531646141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 6531646141 is about 80818.6002167818. The cubic root of 6531646141 is about 1869.2793834699.

The spelling of 6531646141 in words is "six billion, five hundred thirty-one million, six hundred forty-six thousand, one hundred forty-one".