63515366461345 has 32 divisors (see below), whose sum is σ = 78894021288096. Its totient is φ = 49054647091200.

The previous prime is 63515366461343. The next prime is 63515366461357. The reversal of 63515366461345 is 54316466351536.

It is a happy number.

63515366461345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 43822069790976 + 19693296670369 = 6619824^2 + 4437713^2 .

It is not a de Polignac number, because 63515366461345 - 2¹ = 63515366461343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63515366461345.

It is not an unprimeable number, because it can be changed into a prime (63515366461343) 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 31 ways as a sum of consecutive naturals, for example, 136118535 + ... + 136584355.

It is an arithmetic number, because the mean of its divisors is an integer number (2465438165253).

Almost surely, 2^{63515366461345} is an apocalyptic number.

It is an amenable number.

63515366461345 is a deficient number, since it is larger than the sum of its proper divisors (15378654826751).

63515366461345 is a wasteful number, since it uses less digits than its factorization.

63515366461345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472821.

The product of its digits is 69984000, while the sum is 58.

The spelling of 63515366461345 in words is "sixty-three trillion, five hundred fifteen billion, three hundred sixty-six million, four hundred sixty-one thousand, three hundred forty-five".