63861717952 has 14 divisors (see below), whose sum is σ = 126725596688. Its totient is φ = 31930858944.

The previous prime is 63861717943. The next prime is 63861717961. The reversal of 63861717952 is 25971716836.

It is an interprime number because it is at equal distance from previous prime (63861717943) and next prime (63861717961).

It is a junction number, because it is equal to n+sod(n) for n = 63861717893 and 63861717902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498919608 + ... + 498919735.

Almost surely, 2^63861717952 is an apocalyptic number.

It is an amenable number.

63861717952 is a deficient number, since it is larger than the sum of its proper divisors (62863878736).

63861717952 is an equidigital number, since it uses as much as digits as its factorization.

63861717952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997839355 (or 997839345 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The spelling of 63861717952 in words is "sixty-three billion, eight hundred sixty-one million, seven hundred seventeen thousand, nine hundred fifty-two".