71306477713 has 6 divisors (see below), whose sum is σ = 75747711926. Its totient is φ = 67111978752.

The previous prime is 71306477707. The next prime is 71306477813. The reversal of 71306477713 is 31777460317.

It can be written as a sum of positive squares in 3 ways, for example, as 15767071489 + 55539406224 = 125567^2 + 235668^2 .

It is not a de Polignac number, because 71306477713 - 2⁵ = 71306477681 is a prime.

It is a super-3 number, since 3×71306477713³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71306477113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123367320 + ... + 123367897.

Almost surely, 2^71306477713 is an apocalyptic number.

It is an amenable number.

71306477713 is a deficient number, since it is larger than the sum of its proper divisors (4441234213).

71306477713 is a wasteful number, since it uses less digits than its factorization.

71306477713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246735251 (or 246735234 counting only the distinct ones).

The product of its (nonzero) digits is 518616, while the sum is 46.

The spelling of 71306477713 in words is "seventy-one billion, three hundred six million, four hundred seventy-seven thousand, seven hundred thirteen".