63928803986 has 16 divisors (see below), whose sum is σ = 100951544160. Its totient is φ = 30278666880.

The previous prime is 63928803979. The next prime is 63928804003. The reversal of 63928803986 is 68930882936.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266621 + ... + 446031.

It is an arithmetic number, because the mean of its divisors is an integer number (6309471510).

Almost surely, 2^63928803986 is an apocalyptic number.

63928803986 is a deficient number, since it is larger than the sum of its proper divisors (37022740174).

63928803986 is a wasteful number, since it uses less digits than its factorization.

63928803986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188809.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 63928803986 in words is "sixty-three billion, nine hundred twenty-eight million, eight hundred three thousand, nine hundred eighty-six".