71727980340 has 96 divisors (see below), whose sum is σ = 211462110720. Its totient is φ = 18116182656.

The previous prime is 71727980339. The next prime is 71727980347. The reversal of 71727980340 is 4308972717.

It is a self number, because there is not a number n which added to its sum of digits gives 71727980340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71727980347) 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 31 ways as a sum of consecutive naturals, for example, 8800147 + ... + 8808293.

It is an arithmetic number, because the mean of its divisors is an integer number (2202730320).

Almost surely, 2^71727980340 is an apocalyptic number.

It is an amenable number.

71727980340 is an abundant number, since it is smaller than the sum of its proper divisors (139734130380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71727980340 is a wasteful number, since it uses less digits than its factorization.

71727980340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901 (or 15899 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 71727980340 in words is "seventy-one billion, seven hundred twenty-seven million, nine hundred eighty thousand, three hundred forty".