20005440201 has 12 divisors (see below), whose sum is σ = 29677740612. Its totient is φ = 12976501536.

The previous prime is 20005440197. The next prime is 20005440239. The reversal of 20005440201 is 10204450002.

20005440201 is a `hidden beast` number, since 20 + 0 + 0 + 5 + 440 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10393598601 + 9611841600 = 101949^2 + 98040^2 .

It is not a de Polignac number, because 20005440201 - 2² = 20005440197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20005440601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30037866 + ... + 30038531.

It is an arithmetic number, because the mean of its divisors is an integer number (2473145051).

Almost surely, 2^20005440201 is an apocalyptic number.

It is an amenable number.

20005440201 is a deficient number, since it is larger than the sum of its proper divisors (9672300411).

20005440201 is a wasteful number, since it uses less digits than its factorization.

20005440201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60076440 (or 60076437 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 20005440201 its reverse (10204450002), we get a palindrome (30209890203).

The spelling of 20005440201 in words is "twenty billion, five million, four hundred forty thousand, two hundred one".