20205601417 has 4 divisors (see below), whose sum is σ = 20317234756. Its totient is φ = 20093968080.

The previous prime is 20205601397. The next prime is 20205601441. The reversal of 20205601417 is 71410650202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 632472201 + 19573129216 = 25149^2 + 139904^2 .

It is a cyclic number.

It is not a de Polignac number, because 20205601417 - 2⁷ = 20205601289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20205601217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55816398 + ... + 55816759.

It is an arithmetic number, because the mean of its divisors is an integer number (5079308689).

Almost surely, 2^20205601417 is an apocalyptic number.

It is an amenable number.

20205601417 is a deficient number, since it is larger than the sum of its proper divisors (111633339).

20205601417 is a wasteful number, since it uses less digits than its factorization.

20205601417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111633338.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 20205601417 in words is "twenty billion, two hundred five million, six hundred one thousand, four hundred seventeen".