71285969113 has 8 divisors (see below), whose sum is σ = 71566997832. Its totient is φ = 71005111296.

The previous prime is 71285969101. The next prime is 71285969141. The reversal of 71285969113 is 31196958217.

It can be written as a sum of positive squares in 4 ways, for example, as 3199938624 + 68086030489 = 56568^2 + 260933^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71285969113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71285969173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827931 + ... + 909967.

It is an arithmetic number, because the mean of its divisors is an integer number (8945874729).

Almost surely, 2^71285969113 is an apocalyptic number.

It is an amenable number.

71285969113 is a deficient number, since it is larger than the sum of its proper divisors (281028719).

71285969113 is a wasteful number, since it uses less digits than its factorization.

71285969113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85451.

The product of its digits is 816480, while the sum is 52.

The spelling of 71285969113 in words is "seventy-one billion, two hundred eighty-five million, nine hundred sixty-nine thousand, one hundred thirteen".