20469311041 has 9 divisors (see below), whose sum is σ = 20613239971. Its totient is φ = 20326383112.

The previous prime is 20469311039. The next prime is 20469311069. The reversal of 20469311041 is 14011396402.

The square root of 20469311041 is 143071.

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., 18619967025 + 1849344016 = 136455^2 + 43004^2 .

It is not a de Polignac number, because 20469311041 - 2¹ = 20469311039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20469310994 and 20469311012.

It is not an unprimeable number, because it can be changed into a prime (20469311011) 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, 24750870 + ... + 24751696.

Almost surely, 2^20469311041 is an apocalyptic number.

20469311041 is the 143071-st square number.

20469311041 is the 71536-th centered octagonal number.

It is an amenable number.

20469311041 is a deficient number, since it is larger than the sum of its proper divisors (143928930).

20469311041 is an frugal number, since it uses more digits than its factorization.

20469311041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

Multiplying 20469311041 by its product of nonzero digits (5184), we get a square (106112908436544 = 10301112²).

The spelling of 20469311041 in words is "twenty billion, four hundred sixty-nine million, three hundred eleven thousand, forty-one".