63281109373 has 2 divisors, whose sum is σ = 63281109374. Its totient is φ = 63281109372.

The previous prime is 63281109347. The next prime is 63281109377. The reversal of 63281109373 is 37390118236.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42468142084 + 20812967289 = 206078^2 + 144267^2 .

It is a cyclic number.

It is not a de Polignac number, because 63281109373 - 2¹⁷ = 63280978301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63281109377) 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, 31640554686 + 31640554687.

It is an arithmetic number, because the mean of its divisors is an integer number (31640554687).

Almost surely, 2^63281109373 is an apocalyptic number.

It is an amenable number.

63281109373 is a deficient number, since it is larger than the sum of its proper divisors (1).

63281109373 is an equidigital number, since it uses as much as digits as its factorization.

63281109373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 63281109373 in words is "sixty-three billion, two hundred eighty-one million, one hundred nine thousand, three hundred seventy-three".