1721139334084 has 9 divisors (see below), whose sum is σ = 3011998426381. Its totient is φ = 860568355120.

The previous prime is 1721139334051. The next prime is 1721139334093. The reversal of 1721139334084 is 4804339311271.

The square root of 1721139334084 is 1311922.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 167626374084 + 1553512960000 = 409422^2 + 1246400^2 .

It is a super-2 number, since 2×1721139334084² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2295864 + ... + 2951824.

Almost surely, 2^{1721139334084} is an apocalyptic number.

1721139334084 is the 1311922-nd square number.

It is an amenable number.

1721139334084 is a deficient number, since it is larger than the sum of its proper divisors (1290859092297).

1721139334084 is an frugal number, since it uses more digits than its factorization.

1721139334084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311926 (or 655963 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 1721139334084 in words is "one trillion, seven hundred twenty-one billion, one hundred thirty-nine million, three hundred thirty-four thousand, eighty-four".