20004166417 has 2 divisors, whose sum is σ = 20004166418. Its totient is φ = 20004166416.

The previous prime is 20004166319. The next prime is 20004166493. The reversal of 20004166417 is 71466140002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19948455121 + 55711296 = 141239^2 + 7464^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004166417 - 2¹⁵ = 20004133649 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004169417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002083208 + 10002083209.

It is an arithmetic number, because the mean of its divisors is an integer number (10002083209).

Almost surely, 2^20004166417 is an apocalyptic number.

It is an amenable number.

20004166417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004166417 is an equidigital number, since it uses as much as digits as its factorization.

20004166417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 20004166417 in words is "twenty billion, four million, one hundred sixty-six thousand, four hundred seventeen".