20853092836 has 27 divisors (see below), whose sum is σ = 36903296073. Its totient is φ = 10310588400.

The previous prime is 20853092791. The next prime is 20853092837. The reversal of 20853092836 is 63829035802.

The square root of 20853092836 is 144406.

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., 17984419236 + 2868673600 = 134106^2 + 53560^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20853092837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29747286 + ... + 29747986.

Almost surely, 2^20853092836 is an apocalyptic number.

20853092836 is the 144406-th square number.

It is an amenable number.

20853092836 is a deficient number, since it is larger than the sum of its proper divisors (16050203237).

20853092836 is an frugal number, since it uses more digits than its factorization.

20853092836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 20853092836 in words is "twenty billion, eight hundred fifty-three million, ninety-two thousand, eight hundred thirty-six".