71383155089 has 4 divisors (see below), whose sum is σ = 71587691700. Its totient is φ = 71178618480.

The previous prime is 71383155037. The next prime is 71383155133. The reversal of 71383155089 is 98055138317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98055138317 = 1193 ⋅82192069.

It can be written as a sum of positive squares in 2 ways, for example, as 24766890625 + 46616264464 = 157375^2 + 215908^2 .

It is a cyclic number.

It is not a de Polignac number, because 71383155089 - 2¹⁶ = 71383089553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71383155289) 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, 102267782 + ... + 102268479.

It is an arithmetic number, because the mean of its divisors is an integer number (17896922925).

Almost surely, 2^71383155089 is an apocalyptic number.

It is an amenable number.

71383155089 is a deficient number, since it is larger than the sum of its proper divisors (204536611).

71383155089 is a wasteful number, since it uses less digits than its factorization.

71383155089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204536610.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 71383155089 in words is "seventy-one billion, three hundred eighty-three million, one hundred fifty-five thousand, eighty-nine".