20209104371 has 2 divisors, whose sum is σ = 20209104372. Its totient is φ = 20209104370.

The previous prime is 20209104329. The next prime is 20209104403. The reversal of 20209104371 is 17340190202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20209104371 - 2²² = 20204910067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20209104301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10104552185 + 10104552186.

It is an arithmetic number, because the mean of its divisors is an integer number (10104552186).

Almost surely, 2^20209104371 is an apocalyptic number.

20209104371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20209104371 is an equidigital number, since it uses as much as digits as its factorization.

20209104371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 20209104371 its reverse (17340190202), we get a palindrome (37549294573).

The spelling of 20209104371 in words is "twenty billion, two hundred nine million, one hundred four thousand, three hundred seventy-one".