71116019 has 8 divisors (see below), whose sum is σ = 77346192. Its totient is φ = 64994400.

The previous prime is 71115997. The next prime is 71116021. The reversal of 71116019 is 91061117.

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

It is a cyclic number.

It is not a de Polignac number, because 71116019 - 2²⁰ = 70067443 is a prime.

It is a super-2 number, since 2×71116019² = 10114976316816722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71110019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25769 + ... + 28394.

It is an arithmetic number, because the mean of its divisors is an integer number (9668274).

Almost surely, 2^71116019 is an apocalyptic number.

71116019 is a deficient number, since it is larger than the sum of its proper divisors (6230173).

71116019 is a wasteful number, since it uses less digits than its factorization.

71116019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54277.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 71116019 is about 8433.0314241084. The cubic root of 71116019 is about 414.3071984612.

The spelling of 71116019 in words is "seventy-one million, one hundred sixteen thousand, nineteen".