63730265217 has 16 divisors (see below), whose sum is σ = 88566386688. Its totient is φ = 40717106640.

The previous prime is 63730265191. The next prime is 63730265239. The reversal of 63730265217 is 71256203736.

It is not a de Polignac number, because 63730265217 - 2¹¹ = 63730263169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63730265117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3316983 + ... + 3336140.

It is an arithmetic number, because the mean of its divisors is an integer number (5535399168).

Almost surely, 2^63730265217 is an apocalyptic number.

It is an amenable number.

63730265217 is a deficient number, since it is larger than the sum of its proper divisors (24836121471).

63730265217 is a wasteful number, since it uses less digits than its factorization.

63730265217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653260.

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 63730265217 in words is "sixty-three billion, seven hundred thirty million, two hundred sixty-five thousand, two hundred seventeen".