20266939044 has 135 divisors (see below), whose sum is σ = 58317282331. Its totient is φ = 6132954960.

The previous prime is 20266939039. The next prime is 20266939051. The reversal of 20266939044 is 44093966202.

The square root of 20266939044 is 142362.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 28187317 + ... + 28188035.

Almost surely, 2^20266939044 is an apocalyptic number.

20266939044 is the 142362-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20266939044

20266939044 is an abundant number, since it is smaller than the sum of its proper divisors (38050343287).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20266939044 is an equidigital number, since it uses as much as digits as its factorization.

20266939044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 20266939044 in words is "twenty billion, two hundred sixty-six million, nine hundred thirty-nine thousand, forty-four".