63778625732449 has 8 divisors (see below), whose sum is σ = 65410509855680. Its totient is φ = 62153498894256.

The previous prime is 63778625732443. The next prime is 63778625732453. The reversal of 63778625732449 is 94423752687736.

63778625732449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 63778625732449 - 2³ = 63778625732441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63778625732441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1689302142 + ... + 1689339895.

It is an arithmetic number, because the mean of its divisors is an integer number (8176313731960).

Almost surely, 2^{63778625732449} is an apocalyptic number.

It is an amenable number.

63778625732449 is a deficient number, since it is larger than the sum of its proper divisors (1631884123231).

63778625732449 is a wasteful number, since it uses less digits than its factorization.

63778625732449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378642519.

The product of its digits is 2560481280, while the sum is 73.

The spelling of 63778625732449 in words is "sixty-three trillion, seven hundred seventy-eight billion, six hundred twenty-five million, seven hundred thirty-two thousand, four hundred forty-nine".