71065720501 has 8 divisors (see below), whose sum is σ = 75082064000. Its totient is φ = 67076981280.

The previous prime is 71065720499. The next prime is 71065720543. The reversal of 71065720501 is 10502756017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71065720501 - 2¹ = 71065720499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71065720301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6895776 + ... + 6906073.

It is an arithmetic number, because the mean of its divisors is an integer number (9385258000).

Almost surely, 2^71065720501 is an apocalyptic number.

It is an amenable number.

71065720501 is a deficient number, since it is larger than the sum of its proper divisors (4016343499).

71065720501 is a wasteful number, since it uses less digits than its factorization.

71065720501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13802139.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 71065720501 in words is "seventy-one billion, sixty-five million, seven hundred twenty thousand, five hundred one".