71630667525169 has 4 divisors (see below), whose sum is σ = 71639305018996. Its totient is φ = 71622030031344.

The previous prime is 71630667525143. The next prime is 71630667525187. The reversal of 71630667525169 is 96152576603617.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52470682632225 + 19159984892944 = 7243665^2 + 4377212^2 .

It is a cyclic number.

It is not a de Polignac number, because 71630667525169 - 2⁷ = 71630667525041 is a prime.

It is a super-3 number, since 3×71630667525169³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71630667525169.

It is not an unprimeable number, because it can be changed into a prime (71630667525139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4318734474 + ... + 4318751059.

It is an arithmetic number, because the mean of its divisors is an integer number (17909826254749).

Almost surely, 2^{71630667525169} is an apocalyptic number.

It is an amenable number.

71630667525169 is a deficient number, since it is larger than the sum of its proper divisors (8637493827).

71630667525169 is an equidigital number, since it uses as much as digits as its factorization.

71630667525169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8637493826.

The product of its (nonzero) digits is 85730400, while the sum is 64.

The spelling of 71630667525169 in words is "seventy-one trillion, six hundred thirty billion, six hundred sixty-seven million, five hundred twenty-five thousand, one hundred sixty-nine".