318636494553664 has 189 divisors, whose sum is σ = 768951299541747. Its totient is φ = 130611746673408.

The previous prime is 318636494553631. The next prime is 318636494553677. The reversal of 318636494553664 is 466355494636813.

The square root of 318636494553664 is 17850392.

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

It is a super-2 number, since 2×318636494553664² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22991297967 + ... + 22991311825.

Almost surely, 2^{318636494553664} is an apocalyptic number.

318636494553664 is the 17850392-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318636494553664

318636494553664 is an abundant number, since it is smaller than the sum of its proper divisors (450314804988083).

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

318636494553664 is an frugal number, since it uses more digits than its factorization.

318636494553664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27790 (or 13891 counting only the distinct ones).

The product of its digits is 4031078400, while the sum is 73.

The spelling of 318636494553664 in words is "three hundred eighteen trillion, six hundred thirty-six billion, four hundred ninety-four million, five hundred fifty-three thousand, six hundred sixty-four".