20824336630161 has 45 divisors (see below), whose sum is σ = 31239869633049. Its totient is φ = 13824270048600.

The previous prime is 20824336630099. The next prime is 20824336630193. The reversal of 20824336630161 is 16103663342802.

The square root of 20824336630161 is 4563369.

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

20824336630161 is a `hidden beast` number, since 2 + 0 + 8 + 2 + 4 + 3 + 3 + 6 + 630 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 20824336630161 - 2¹³ = 20824336621969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20824336670161) 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, 11130056056 + ... + 11130057926.

Almost surely, 2^{20824336630161} is an apocalyptic number.

20824336630161 is the 4563369-th square number.

20824336630161 is the 2281685-th centered octagonal number.

It is an amenable number.

20824336630161 is a deficient number, since it is larger than the sum of its proper divisors (10415533002888).

20824336630161 is an frugal number, since it uses more digits than its factorization.

20824336630161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

Adding to 20824336630161 its reverse (16103663342802), we get a palindrome (36927999972963).

The spelling of 20824336630161 in words is "twenty trillion, eight hundred twenty-four billion, three hundred thirty-six million, six hundred thirty thousand, one hundred sixty-one".