71263585289 has 16 divisors (see below), whose sum is σ = 77569889040. Its totient is φ = 65075650560.

The previous prime is 71263585259. The next prime is 71263585301. The reversal of 71263585289 is 98258536217.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7296576400 + 63967008889 = 85420^2 + 252917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71263585289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71263585259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3279119 + ... + 3300779.

It is an arithmetic number, because the mean of its divisors is an integer number (4848118065).

Almost surely, 2^71263585289 is an apocalyptic number.

It is an amenable number.

71263585289 is a deficient number, since it is larger than the sum of its proper divisors (6306303751).

71263585289 is a wasteful number, since it uses less digits than its factorization.

71263585289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24380.

The product of its digits is 7257600, while the sum is 56.

The spelling of 71263585289 in words is "seventy-one billion, two hundred sixty-three million, five hundred eighty-five thousand, two hundred eighty-nine".