71347215305 has 32 divisors (see below), whose sum is σ = 90734515200. Its totient is φ = 53707396032.

The previous prime is 71347215301. The next prime is 71347215311. The reversal of 71347215305 is 50351274317.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71347215305 - 2² = 71347215301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71347215301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18074342 + ... + 18078288.

It is an arithmetic number, because the mean of its divisors is an integer number (2835453600).

Almost surely, 2^71347215305 is an apocalyptic number.

It is an amenable number.

71347215305 is a deficient number, since it is larger than the sum of its proper divisors (19387299895).

71347215305 is a wasteful number, since it uses less digits than its factorization.

71347215305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 71347215305 in words is "seventy-one billion, three hundred forty-seven million, two hundred fifteen thousand, three hundred five".