63651421166 has 8 divisors (see below), whose sum is σ = 95478267504. Its totient is φ = 31825332000.

The previous prime is 63651421159. The next prime is 63651421177. The reversal of 63651421166 is 66112415636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125711 + ... + 378293.

It is an arithmetic number, because the mean of its divisors is an integer number (11934783438).

Almost surely, 2^63651421166 is an apocalyptic number.

63651421166 is a deficient number, since it is larger than the sum of its proper divisors (31826846338).

63651421166 is a wasteful number, since it uses less digits than its factorization.

63651421166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378586.

The product of its digits is 155520, while the sum is 41.

The spelling of 63651421166 in words is "sixty-three billion, six hundred fifty-one million, four hundred twenty-one thousand, one hundred sixty-six".