20843851876 has 27 divisors (see below), whose sum is σ = 37508468697. Its totient is φ = 10135054800.

The previous prime is 20843851843. The next prime is 20843851883. The reversal of 20843851876 is 67815834802.

The square root of 20843851876 is 144374.

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., 18651364900 + 2192486976 = 136570^2 + 46824^2 .

It is a super-2 number, since 2×20843851876² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10682701 + ... + 10684651.

Almost surely, 2^20843851876 is an apocalyptic number.

20843851876 is the 144374-th square number.

It is an amenable number.

20843851876 is a deficient number, since it is larger than the sum of its proper divisors (16664616821).

20843851876 is an frugal number, since it uses more digits than its factorization.

20843851876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 20843851876 in words is "twenty billion, eight hundred forty-three million, eight hundred fifty-one thousand, eight hundred seventy-six".