20486483161 has 9 divisors (see below), whose sum is σ = 21004357279. Its totient is φ = 19981087600.

The previous prime is 20486483119. The next prime is 20486483177. The reversal of 20486483161 is 16138468402.

The square root of 20486483161 is 143131.

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., 987153561 + 19499329600 = 31419^2 + 139640^2 .

It is not a de Polignac number, because 20486483161 - 2⁷ = 20486483033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20486483191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5866626 + ... + 5870116.

Almost surely, 2^20486483161 is an apocalyptic number.

20486483161 is the 143131-st square number.

20486483161 is the 71566-th centered octagonal number.

It is an amenable number.

20486483161 is a deficient number, since it is larger than the sum of its proper divisors (517874118).

20486483161 is an frugal number, since it uses more digits than its factorization.

20486483161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7064 (or 3532 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 20486483161 in words is "twenty billion, four hundred eighty-six million, four hundred eighty-three thousand, one hundred sixty-one".