8217151793 has 2 divisors, whose sum is σ = 8217151794. Its totient is φ = 8217151792.

The previous prime is 8217151783. The next prime is 8217151801. The reversal of 8217151793 is 3971517128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6787782544 + 1429369249 = 82388^2 + 37807^2 .

It is a cyclic number.

It is not a de Polignac number, because 8217151793 - 2⁶ = 8217151729 is a prime.

It is a super-2 number, since 2×8217151793² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8217151783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108575896 + 4108575897.

It is an arithmetic number, because the mean of its divisors is an integer number (4108575897).

Almost surely, 2^8217151793 is an apocalyptic number.

It is an amenable number.

8217151793 is a deficient number, since it is larger than the sum of its proper divisors (1).

8217151793 is an equidigital number, since it uses as much as digits as its factorization.

8217151793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 44.

The square root of 8217151793 is about 90648.5068437423. The cubic root of 8217151793 is about 2017.9346757254.

The spelling of 8217151793 in words is "eight billion, two hundred seventeen million, one hundred fifty-one thousand, seven hundred ninety-three".