20203703417 has 2 divisors, whose sum is σ = 20203703418. Its totient is φ = 20203703416.

The previous prime is 20203703353. The next prime is 20203703423. The reversal of 20203703417 is 71430730202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19999899241 + 203804176 = 141421^2 + 14276^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203703417 - 2⁶ = 20203703353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20203703417.

It is not a weakly prime, because it can be changed into another prime (20203703437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101851708 + 10101851709.

It is an arithmetic number, because the mean of its divisors is an integer number (10101851709).

Almost surely, 2^20203703417 is an apocalyptic number.

It is an amenable number.

20203703417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203703417 is an equidigital number, since it uses as much as digits as its factorization.

20203703417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The spelling of 20203703417 in words is "twenty billion, two hundred three million, seven hundred three thousand, four hundred seventeen".