20005440601 has 2 divisors, whose sum is σ = 20005440602. Its totient is φ = 20005440600.

The previous prime is 20005440551. The next prime is 20005440617. The reversal of 20005440601 is 10604450002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11745357376 + 8260083225 = 108376^2 + 90885^2 .

It is a cyclic number.

It is not a de Polignac number, because 20005440601 - 2¹³ = 20005432409 is a prime.

It is not a weakly prime, because it can be changed into another prime (20005440661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002720300 + 10002720301.

It is an arithmetic number, because the mean of its divisors is an integer number (10002720301).

Almost surely, 2^20005440601 is an apocalyptic number.

It is an amenable number.

20005440601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20005440601 is an equidigital number, since it uses as much as digits as its factorization.

20005440601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20005440601 its reverse (10604450002), we get a palindrome (30609890603).

The spelling of 20005440601 in words is "twenty billion, five million, four hundred forty thousand, six hundred one".