63728909207 has 2 divisors, whose sum is σ = 63728909208. Its totient is φ = 63728909206.

The previous prime is 63728909203. The next prime is 63728909249. The reversal of 63728909207 is 70290982736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63728909207 - 2² = 63728909203 is a prime.

It is a super-2 number, since 2×63728909207² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63728909203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31864454603 + 31864454604.

It is an arithmetic number, because the mean of its divisors is an integer number (31864454604).

Almost surely, 2^63728909207 is an apocalyptic number.

63728909207 is a deficient number, since it is larger than the sum of its proper divisors (1).

63728909207 is an equidigital number, since it uses as much as digits as its factorization.

63728909207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 63728909207 in words is "sixty-three billion, seven hundred twenty-eight million, nine hundred nine thousand, two hundred seven".