71973280143 has 12 divisors (see below), whose sum is σ = 104196086280. Its totient is φ = 47873872176.

The previous prime is 71973280139. The next prime is 71973280147. The reversal of 71973280143 is 34108237917.

It is an interprime number because it is at equal distance from previous prime (71973280139) and next prime (71973280147).

It is not a de Polignac number, because 71973280143 - 2² = 71973280139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71973280147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9022008 + ... + 9029981.

It is an arithmetic number, because the mean of its divisors is an integer number (8683007190).

Almost surely, 2^71973280143 is an apocalyptic number.

71973280143 is a deficient number, since it is larger than the sum of its proper divisors (32222806137).

71973280143 is a wasteful number, since it uses less digits than its factorization.

71973280143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052438 (or 18052435 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 71973280143 in words is "seventy-one billion, nine hundred seventy-three million, two hundred eighty thousand, one hundred forty-three".