71316555561316 has 12 divisors (see below), whose sum is σ = 134404277788732. Its totient is φ = 32915333335968.

The previous prime is 71316555561287. The next prime is 71316555561331. The reversal of 71316555561316 is 61316555561317.

It can be written as a sum of positive squares in 2 ways, for example, as 7806972457216 + 63509583104100 = 2794096^2 + 7969290^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685736111115 + ... + 685736111218.

Almost surely, 2^{71316555561316} is an apocalyptic number.

It is an amenable number.

71316555561316 is a deficient number, since it is larger than the sum of its proper divisors (63087722227416).

71316555561316 is a wasteful number, since it uses less digits than its factorization.

71316555561316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371472222350 (or 1371472222348 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 55.

Subtracting from 71316555561316 its reverse (61316555561317), we obtain a palindrome (9999999999999).

The spelling of 71316555561316 in words is "seventy-one trillion, three hundred sixteen billion, five hundred fifty-five million, five hundred sixty-one thousand, three hundred sixteen".