63945824455 has 8 divisors (see below), whose sum is σ = 78606574704. Its totient is φ = 49908936000.

The previous prime is 63945824429. The next prime is 63945824507. The reversal of 63945824455 is 55442854936.

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

It is not a de Polignac number, because 63945824455 - 2²³ = 63937435847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63945824396 and 63945824405.

It is a congruent number.

It is an unprimeable number.

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, 155965221 + ... + 155965630.

It is an arithmetic number, because the mean of its divisors is an integer number (9825821838).

Almost surely, 2^63945824455 is an apocalyptic number.

63945824455 is a deficient number, since it is larger than the sum of its proper divisors (14660750249).

63945824455 is a wasteful number, since it uses less digits than its factorization.

63945824455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311930897.

The product of its digits is 20736000, while the sum is 55.

The spelling of 63945824455 in words is "sixty-three billion, nine hundred forty-five million, eight hundred twenty-four thousand, four hundred fifty-five".