71308361268 has 18 divisors (see below), whose sum is σ = 180251691074. Its totient is φ = 23769453744.

The previous prime is 71308361231. The next prime is 71308361321. The reversal of 71308361268 is 86216380317.

It can be written as a sum of positive squares in only one way, i.e., 66014052624 + 5294308644 = 256932^2 + 72762^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 990393871 + ... + 990393942.

Almost surely, 2^71308361268 is an apocalyptic number.

It is an amenable number.

71308361268 is an abundant number, since it is smaller than the sum of its proper divisors (108943329806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71308361268 is a wasteful number, since it uses less digits than its factorization.

71308361268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980787823 (or 1980787818 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 71308361268 in words is "seventy-one billion, three hundred eight million, three hundred sixty-one thousand, two hundred sixty-eight".