10217359861 has 2 divisors, whose sum is σ = 10217359862. Its totient is φ = 10217359860.

The previous prime is 10217359813. The next prime is 10217359891. The reversal of 10217359861 is 16895371201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8476884900 + 1740474961 = 92070^2 + 41719^2 .

It is a cyclic number.

It is not a de Polignac number, because 10217359861 - 2¹⁷ = 10217228789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10217359891) 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 as a sum of consecutive naturals, namely, 5108679930 + 5108679931.

It is an arithmetic number, because the mean of its divisors is an integer number (5108679931).

Almost surely, 2^10217359861 is an apocalyptic number.

It is an amenable number.

10217359861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10217359861 is an equidigital number, since it uses as much as digits as its factorization.

10217359861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 10217359861 in words is "ten billion, two hundred seventeen million, three hundred fifty-nine thousand, eight hundred sixty-one".