63658317636 has 135 divisors (see below), whose sum is σ = 169277355247. Its totient is φ = 20860660080.

The previous prime is 63658317533. The next prime is 63658317637. The reversal of 63658317636 is 63671385636.

It is a happy number.

The square root of 63658317636 is 252306.

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

63658317636 is a `hidden beast` number, since 6 + 365 + 83 + 176 + 36 = 666.

63658317636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

Its product of digits (9797760) is a multiple of the sum of its prime divisors (243).

It is not an unprimeable number, because it can be changed into a prime (63658317637) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 485941291 + ... + 485941421.

Almost surely, 2^63658317636 is an apocalyptic number.

63658317636 is the 252306-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63658317636

63658317636 is an abundant number, since it is smaller than the sum of its proper divisors (105619037611).

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

63658317636 is a wasteful number, since it uses less digits than its factorization.

63658317636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 243 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 54.

The spelling of 63658317636 in words is "sixty-three billion, six hundred fifty-eight million, three hundred seventeen thousand, six hundred thirty-six".