20695848434361 has 27 divisors (see below), whose sum is σ = 29960050935087. Its totient is φ = 13766815877040.

The previous prime is 20695848434347. The next prime is 20695848434363. The reversal of 20695848434361 is 16343484859602.

The square root of 20695848434361 is 4549269.

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

20695848434361 is a `hidden beast` number, since 2 + 0 + 6 + 9 + 58 + 484 + 3 + 43 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8222378465961 + 12473469968400 = 2867469^2 + 3531780^2 .

It is not a de Polignac number, because 20695848434361 - 2¹¹ = 20695848432313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20695848434363) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7383462186 + ... + 7383464988.

Almost surely, 2^{20695848434361} is an apocalyptic number.

20695848434361 is the 4549269-th square number.

20695848434361 is the 2274635-th centered octagonal number.

It is an amenable number.

20695848434361 is a deficient number, since it is larger than the sum of its proper divisors (9264202500726).

20695848434361 is an frugal number, since it uses more digits than its factorization.

20695848434361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 20695848434361 in words is "twenty trillion, six hundred ninety-five billion, eight hundred forty-eight million, four hundred thirty-four thousand, three hundred sixty-one".