63281999201 has 2 divisors, whose sum is σ = 63281999202. Its totient is φ = 63281999200.

The previous prime is 63281999191. The next prime is 63281999227. The reversal of 63281999201 is 10299918236.

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., 44331723601 + 18950275600 = 210551^2 + 137660^2 .

It is a cyclic number.

It is not a de Polignac number, because 63281999201 - 2²² = 63277804897 is a prime.

It is a super-2 number, since 2×63281999201² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63281999201.

It is not a weakly prime, because it can be changed into another prime (63281999251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31640999600 + 31640999601.

It is an arithmetic number, because the mean of its divisors is an integer number (31640999601).

Almost surely, 2^63281999201 is an apocalyptic number.

It is an amenable number.

63281999201 is a deficient number, since it is larger than the sum of its proper divisors (1).

63281999201 is an equidigital number, since it uses as much as digits as its factorization.

63281999201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 63281999201 in words is "sixty-three billion, two hundred eighty-one million, nine hundred ninety-nine thousand, two hundred one".