449651220517 has 2 divisors, whose sum is σ = 449651220518. Its totient is φ = 449651220516.

The previous prime is 449651220443. The next prime is 449651220527. The reversal of 449651220517 is 715022156944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443770477921 + 5880742596 = 666161^2 + 76686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449651220517 is a prime.

It is a super-2 number, since 2×449651220517² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449651220527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224825610258 + 224825610259.

It is an arithmetic number, because the mean of its divisors is an integer number (224825610259).

Almost surely, 2^449651220517 is an apocalyptic number.

It is an amenable number.

449651220517 is a deficient number, since it is larger than the sum of its proper divisors (1).

449651220517 is an equidigital number, since it uses as much as digits as its factorization.

449651220517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 449651220517 in words is "four hundred forty-nine billion, six hundred fifty-one million, two hundred twenty thousand, five hundred seventeen".