71555310068 has 24 divisors (see below), whose sum is σ = 136656960384. Its totient is φ = 32512910400.

The previous prime is 71555310059. The next prime is 71555310077. The reversal of 71555310068 is 86001355517.

It is an interprime number because it is at equal distance from previous prime (71555310059) and next prime (71555310077).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186905 + ... + 421952.

It is an arithmetic number, because the mean of its divisors is an integer number (5694040016).

Almost surely, 2^71555310068 is an apocalyptic number.

It is an amenable number.

71555310068 is a deficient number, since it is larger than the sum of its proper divisors (65101650316).

71555310068 is a wasteful number, since it uses less digits than its factorization.

71555310068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611543 (or 611541 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 71555310068 in words is "seventy-one billion, five hundred fifty-five million, three hundred ten thousand, sixty-eight".