71316236601 has 9 divisors (see below), whose sum is σ = 103013498991. Its totient is φ = 47543623632.

The previous prime is 71316236587. The next prime is 71316236623. The reversal of 71316236601 is 10663261317.

The square root of 71316236601 is 267051.

It is a perfect power (a square), and thus also a powerful number.

71316236601 is a `hidden beast` number, since 7 + 1 + 3 + 16 + 2 + 36 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22838765625 + 48477470976 = 151125^2 + 220176^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 71316236601 - 2⁵ = 71316236569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71316236671) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 756645 + ... + 845661.

Almost surely, 2^71316236601 is an apocalyptic number.

71316236601 is the 267051-st square number.

71316236601 is the 133526-th centered octagonal number.

It is an amenable number.

71316236601 is a deficient number, since it is larger than the sum of its proper divisors (31697262390).

71316236601 is an frugal number, since it uses more digits than its factorization.

71316236601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178040 (or 89020 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

Multiplying 71316236601 by its sum of digits (36), we get a square (2567384517636 = 1602306²).

Adding to 71316236601 its reverse (10663261317), we get a palindrome (81979497918).

The spelling of 71316236601 in words is "seventy-one billion, three hundred sixteen million, two hundred thirty-six thousand, six hundred one".