20217412907 has 2 divisors, whose sum is σ = 20217412908. Its totient is φ = 20217412906.

The previous prime is 20217412903. The next prime is 20217412937. The reversal of 20217412907 is 70921471202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20217412907 - 2² = 20217412903 is a prime.

It is not a weakly prime, because it can be changed into another prime (20217412903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10108706453 + 10108706454.

It is an arithmetic number, because the mean of its divisors is an integer number (10108706454).

Almost surely, 2^20217412907 is an apocalyptic number.

20217412907 is a deficient number, since it is larger than the sum of its proper divisors (1).

20217412907 is an equidigital number, since it uses as much as digits as its factorization.

20217412907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 20217412907 in words is "twenty billion, two hundred seventeen million, four hundred twelve thousand, nine hundred seven".