63378818366 has 4 divisors (see below), whose sum is σ = 95068227552. Its totient is φ = 31689409182.

The previous prime is 63378818357. The next prime is 63378818383. The reversal of 63378818366 is 66381887336.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15844704590 + ... + 15844704593.

It is an arithmetic number, because the mean of its divisors is an integer number (23767056888).

Almost surely, 2^63378818366 is an apocalyptic number.

63378818366 is a deficient number, since it is larger than the sum of its proper divisors (31689409186).

63378818366 is a wasteful number, since it uses less digits than its factorization.

63378818366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31689409185.

The product of its digits is 20901888, while the sum is 59.

The spelling of 63378818366 in words is "sixty-three billion, three hundred seventy-eight million, eight hundred eighteen thousand, three hundred sixty-six".