726562803172 has 6 divisors (see below), whose sum is σ = 1271484905558. Its totient is φ = 363281401584.

The previous prime is 726562803163. The next prime is 726562803193. The reversal of 726562803172 is 271308265627.

It can be written as a sum of positive squares in only one way, i.e., 678801323236 + 47761479936 = 823894^2 + 218544^2 .

It is a super-3 number, since 3×726562803172³ (a number of 37 digits) contains 333 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 as a sum of consecutive naturals, namely, 90820350393 + ... + 90820350400.

Almost surely, 2^726562803172 is an apocalyptic number.

It is an amenable number.

726562803172 is a deficient number, since it is larger than the sum of its proper divisors (544922102386).

726562803172 is a wasteful number, since it uses less digits than its factorization.

726562803172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181640700797 (or 181640700795 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 726562803172 in words is "seven hundred twenty-six billion, five hundred sixty-two million, eight hundred three thousand, one hundred seventy-two".