709366533121 has 27 divisors (see below), whose sum is σ = 743078972649. Its totient is φ = 677160156000.

The previous prime is 709366533049. The next prime is 709366533133. The reversal of 709366533121 is 121335663907.

The square root of 709366533121 is 842239.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2556414721 + 706810118400 = 50561^2 + 840720^2 .

It is not a de Polignac number, because 709366533121 - 2¹⁹ = 709366008833 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709366503121) 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, 2637050175 + ... + 2637050443.

Almost surely, 2^709366533121 is an apocalyptic number.

709366533121 is the 842239-th square number.

709366533121 is the 421120-th centered octagonal number.

It is an amenable number.

709366533121 is a deficient number, since it is larger than the sum of its proper divisors (33712439528).

709366533121 is an frugal number, since it uses more digits than its factorization.

709366533121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 709366533121 in words is "seven hundred nine billion, three hundred sixty-six million, five hundred thirty-three thousand, one hundred twenty-one".