63475779136 has 189 divisors, whose sum is σ = 161450714817. Its totient is φ = 24670356480.

The previous prime is 63475779131. The next prime is 63475779181. The reversal of 63475779136 is 63197757436.

The square root of 63475779136 is 251944.

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

It can be written as a sum of positive squares in only one way, i.e., 58011612736 + 5464166400 = 240856^2 + 73920^2 .

It is not an unprimeable number, because it can be changed into a prime (63475779131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 155197300 + ... + 155197708.

Almost surely, 2^63475779136 is an apocalyptic number.

63475779136 is the 251944-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63475779136

63475779136 is an abundant number, since it is smaller than the sum of its proper divisors (97974935681).

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

63475779136 is an equidigital number, since it uses as much as digits as its factorization.

63475779136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 429 counting only the distinct ones).

The product of its digits is 20003760, while the sum is 58.

The spelling of 63475779136 in words is "sixty-three billion, four hundred seventy-five million, seven hundred seventy-nine thousand, one hundred thirty-six".