71968077829 has 8 divisors (see below), whose sum is σ = 73363829760. Its totient is φ = 70582940400.

The previous prime is 71968077809. The next prime is 71968077877. The reversal of 71968077829 is 92877086917.

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 a de Polignac number, because none of the positive numbers 2^k-71968077829 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 (71968077809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2639934 + ... + 2667055.

It is an arithmetic number, because the mean of its divisors is an integer number (9170478720).

Almost surely, 2^71968077829 is an apocalyptic number.

It is an amenable number.

71968077829 is a deficient number, since it is larger than the sum of its proper divisors (1395751931).

71968077829 is a wasteful number, since it uses less digits than its factorization.

71968077829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5307251.

The product of its (nonzero) digits is 21337344, while the sum is 64.

The spelling of 71968077829 in words is "seventy-one billion, nine hundred sixty-eight million, seventy-seven thousand, eight hundred twenty-nine".