71975837989 has 8 divisors (see below), whose sum is σ = 78796552032. Its totient is φ = 65201366640.

The previous prime is 71975837951. The next prime is 71975838043. The reversal of 71975837989 is 98973857917.

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 71975837989 - 2¹⁷ = 71975706917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71975837939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11557414 + ... + 11563639.

It is an arithmetic number, because the mean of its divisors is an integer number (9849569004).

Almost surely, 2^71975837989 is an apocalyptic number.

It is an amenable number.

71975837989 is a deficient number, since it is larger than the sum of its proper divisors (6820714043).

71975837989 is a wasteful number, since it uses less digits than its factorization.

71975837989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23121347.

The product of its digits is 240045120, while the sum is 73.

The spelling of 71975837989 in words is "seventy-one billion, nine hundred seventy-five million, eight hundred thirty-seven thousand, nine hundred eighty-nine".