441431256340649 has 2 divisors, whose sum is σ = 441431256340650. Its totient is φ = 441431256340648.

The previous prime is 441431256340631. The next prime is 441431256340687. The reversal of 441431256340649 is 946043652134144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341533870003225 + 99897386337424 = 18480635^2 + 9994868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441431256340649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 441431256340594 and 441431256340603.

It is not a weakly prime, because it can be changed into another prime (441431256342649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220715628170324 + 220715628170325.

It is an arithmetic number, because the mean of its divisors is an integer number (220715628170325).

Almost surely, 2^{441431256340649} is an apocalyptic number.

It is an amenable number.

441431256340649 is a deficient number, since it is larger than the sum of its proper divisors (1).

441431256340649 is an equidigital number, since it uses as much as digits as its factorization.

441431256340649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29859840, while the sum is 56.

The spelling of 441431256340649 in words is "four hundred forty-one trillion, four hundred thirty-one billion, two hundred fifty-six million, three hundred forty thousand, six hundred forty-nine".