63990705303 has 24 divisors (see below), whose sum is σ = 105646576256. Its totient is φ = 36562266000.

The previous prime is 63990705301. The next prime is 63990705313. The reversal of 63990705303 is 30350709936.

63990705303 is a `hidden beast` number, since 639 + 9 + 0 + 7 + 0 + 5 + 3 + 0 + 3 = 666.

It is not a de Polignac number, because 63990705303 - 2¹ = 63990705301 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63990705301) 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 23 ways as a sum of consecutive naturals, for example, 615228 + ... + 711678.

Almost surely, 2^63990705303 is an apocalyptic number.

63990705303 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

63990705303 is a deficient number, since it is larger than the sum of its proper divisors (41655870953).

63990705303 is a wasteful number, since it uses less digits than its factorization.

63990705303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106995 (or 106992 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 45.

The spelling of 63990705303 in words is "sixty-three billion, nine hundred ninety million, seven hundred five thousand, three hundred three".