63578613904 has 75 divisors (see below), whose sum is σ = 133807232013. Its totient is φ = 29265305472.

The previous prime is 63578613893. The next prime is 63578613911. The reversal of 63578613904 is 40931687536.

It is a happy number.

The square root of 63578613904 is 252148.

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

It can be written as a sum of positive squares in 7 ways, for example, as 63433459600 + 145154304 = 251860^2 + 12048^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 170451862 + ... + 170452234.

Almost surely, 2^63578613904 is an apocalyptic number.

63578613904 is the 252148-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63578613904

63578613904 is an abundant number, since it is smaller than the sum of its proper divisors (70228618109).

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

63578613904 is an frugal number, since it uses more digits than its factorization.

63578613904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 63578613904 in words is "sixty-three billion, five hundred seventy-eight million, six hundred thirteen thousand, nine hundred four".