1332660139281 has 27 divisors (see below), whose sum is σ = 1989212135547. Its totient is φ = 859711470480.

The previous prime is 1332660139271. The next prime is 1332660139297. The reversal of 1332660139281 is 1829310662331.

The square root of 1332660139281 is 1154409.

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

1332660139281 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 6 + 601 + 39 + 2 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 399341844225 + 933318295056 = 631935^2 + 966084^2 .

It is not a de Polignac number, because 1332660139281 - 2⁹ = 1332660138769 is a prime.

It is a super-2 number, since 2×1332660139281² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1332660139231) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 107353831 + ... + 107366243.

Almost surely, 2^{1332660139281} is an apocalyptic number.

1332660139281 is the 1154409-th square number.

1332660139281 is the 577205-th centered octagonal number.

It is an amenable number.

1332660139281 is a deficient number, since it is larger than the sum of its proper divisors (656551996266).

1332660139281 is an frugal number, since it uses more digits than its factorization.

1332660139281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24894 (or 12447 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 1332660139281 in words is "one trillion, three hundred thirty-two billion, six hundred sixty million, one hundred thirty-nine thousand, two hundred eighty-one".