71116246057 has 4 divisors (see below), whose sum is σ = 71116959376. Its totient is φ = 71115532740.

The previous prime is 71116246051. The next prime is 71116246111. The reversal of 71116246057 is 75064261117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71116246057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71116246051) 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, 176919 + ... + 416572.

It is an arithmetic number, because the mean of its divisors is an integer number (17779239844).

Almost surely, 2^71116246057 is an apocalyptic number.

It is an amenable number.

71116246057 is a deficient number, since it is larger than the sum of its proper divisors (713319).

71116246057 is a wasteful number, since it uses less digits than its factorization.

71116246057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713318.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 71116246057 in words is "seventy-one billion, one hundred sixteen million, two hundred forty-six thousand, fifty-seven".