71900000917 has 2 divisors, whose sum is σ = 71900000918. Its totient is φ = 71900000916.

The previous prime is 71900000867. The next prime is 71900000929.

It is a happy number.

71900000917 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40133711556 + 31766289361 = 200334^2 + 178231^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 71900000917 - 2⁷ = 71900000789 is a prime.

It is a super-2 number, since 2×71900000917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71900000717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35950000458 + 35950000459.

It is an arithmetic number, because the mean of its divisors is an integer number (35950000459).

Almost surely, 2^71900000917 is an apocalyptic number.

It is an amenable number.

71900000917 is a deficient number, since it is larger than the sum of its proper divisors (1).

71900000917 is an equidigital number, since it uses as much as digits as its factorization.

71900000917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969, while the sum is 34.

It can be divided in two parts, 71900000 and 917, that added together give a palindrome (71900917).

The spelling of 71900000917 in words is "seventy-one billion, nine hundred million, nine hundred seventeen", and thus it is an aban number.