638376768363 has 16 divisors (see below), whose sum is σ = 859755622176. Its totient is φ = 421292774400.

The previous prime is 638376768347. The next prime is 638376768397. The reversal of 638376768363 is 363867673836.

It is not a de Polignac number, because 638376768363 - 2⁴ = 638376768347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 638376768294 and 638376768303.

It is not an unprimeable number, because it can be changed into a prime (638376768313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467195 + ... + 1851867.

It is an arithmetic number, because the mean of its divisors is an integer number (53734726386).

Almost surely, 2^638376768363 is an apocalyptic number.

638376768363 is a deficient number, since it is larger than the sum of its proper divisors (221378853813).

638376768363 is a wasteful number, since it uses less digits than its factorization.

638376768363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390254.

The product of its digits is 329204736, while the sum is 66.

The spelling of 638376768363 in words is "six hundred thirty-eight billion, three hundred seventy-six million, seven hundred sixty-eight thousand, three hundred sixty-three".