6435556241 has 2 divisors, whose sum is σ = 6435556242. Its totient is φ = 6435556240.

The previous prime is 6435556219. The next prime is 6435556271. The reversal of 6435556241 is 1426555346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6420656641 + 14899600 = 80129^2 + 3860^2 .

It is a cyclic number.

It is not a de Polignac number, because 6435556241 - 2²⁶ = 6368447377 is a prime.

It is not a weakly prime, because it can be changed into another prime (6435556201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217778120 + 3217778121.

It is an arithmetic number, because the mean of its divisors is an integer number (3217778121).

Almost surely, 2^6435556241 is an apocalyptic number.

It is an amenable number.

6435556241 is a deficient number, since it is larger than the sum of its proper divisors (1).

6435556241 is an equidigital number, since it uses as much as digits as its factorization.

6435556241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 41.

The square root of 6435556241 is about 80221.9187067973. The cubic root of 6435556241 is about 1860.0674659500.

The spelling of 6435556241 in words is "six billion, four hundred thirty-five million, five hundred fifty-six thousand, two hundred forty-one".