63476786916 has 45 divisors (see below), whose sum is σ = 165952715929. Its totient is φ = 21157417296.

The previous prime is 63476786911. The next prime is 63476786927. The reversal of 63476786916 is 61968767436.

The square root of 63476786916 is 251946.

It is a perfect power (a square), and thus also a powerful number.

63476786916 is a `hidden beast` number, since 6 + 3 + 476 + 78 + 6 + 91 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30895092900 + 32581694016 = 175770^2 + 180504^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63476786911) 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 14 ways as a sum of consecutive naturals, for example, 4528030 + ... + 4542026.

Almost surely, 2^63476786916 is an apocalyptic number.

63476786916 is the 251946-th square number.

It is an amenable number.

63476786916 is an abundant number, since it is smaller than the sum of its proper divisors (102475929013).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63476786916 is an frugal number, since it uses more digits than its factorization.

63476786916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28010 (or 14002 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 63476786916 in words is "sixty-three billion, four hundred seventy-six million, seven hundred eighty-six thousand, nine hundred sixteen".