727985161744 has 20 divisors (see below), whose sum is σ = 1412263487824. Its totient is φ = 363530068128.

The previous prime is 727985161721. The next prime is 727985161763. The reversal of 727985161744 is 447161589727.

It is a happy number.

It is a super-2 number, since 2×727985161744² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28894062 + ... + 28919245.

Almost surely, 2^727985161744 is an apocalyptic number.

It is an amenable number.

727985161744 is a deficient number, since it is larger than the sum of its proper divisors (684278326080).

727985161744 is a wasteful number, since it uses less digits than its factorization.

727985161744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57814102 (or 57814096 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 61.

The spelling of 727985161744 in words is "seven hundred twenty-seven billion, nine hundred eighty-five million, one hundred sixty-one thousand, seven hundred forty-four".