63943280956 has 48 divisors (see below), whose sum is σ = 119612747520. Its totient is φ = 29805085440.

The previous prime is 63943280953. The next prime is 63943280963. The reversal of 63943280956 is 65908234936.

It is a junction number, because it is equal to n+sod(n) for n = 63943280897 and 63943280906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63943280953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4179601 + ... + 4194871.

It is an arithmetic number, because the mean of its divisors is an integer number (2491932240).

Almost surely, 2^63943280956 is an apocalyptic number.

It is an amenable number.

63943280956 is a deficient number, since it is larger than the sum of its proper divisors (55669466564).

63943280956 is a wasteful number, since it uses less digits than its factorization.

63943280956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15874 (or 15872 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 63943280956 in words is "sixty-three billion, nine hundred forty-three million, two hundred eighty thousand, nine hundred fifty-six".