71659737993 has 8 divisors (see below), whose sum is σ = 95549144256. Its totient is φ = 47771745200.

The previous prime is 71659737991. The next prime is 71659738063. The reversal of 71659737993 is 39973795617.

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 71659737993 - 2¹ = 71659737991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71659737991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228798 + ... + 442343.

It is an arithmetic number, because the mean of its divisors is an integer number (11943643032).

Almost surely, 2^71659737993 is an apocalyptic number.

It is an amenable number.

71659737993 is a deficient number, since it is larger than the sum of its proper divisors (23889406263).

71659737993 is a wasteful number, since it uses less digits than its factorization.

71659737993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706735.

The product of its digits is 67512690, while the sum is 66.

The spelling of 71659737993 in words is "seventy-one billion, six hundred fifty-nine million, seven hundred thirty-seven thousand, nine hundred ninety-three".