709353057361 has 81 divisors (see below), whose sum is σ = 846826943571. Its totient is φ = 593793068544.

The previous prime is 709353057353. The next prime is 709353057367. The reversal of 709353057361 is 163750353907.

It is a happy number.

The square root of 709353057361 is 842231.

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

It can be written as a sum of positive squares in 13 ways, for example, as 120843140625 + 588509916736 = 347625^2 + 767144^2 .

It is not a de Polignac number, because 709353057361 - 2³ = 709353057353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709353057367) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 6886922836 + ... + 6886922938.

Almost surely, 2^709353057361 is an apocalyptic number.

709353057361 is the 842231-st square number.

709353057361 is the 421116-th centered octagonal number.

It is an amenable number.

709353057361 is a deficient number, since it is larger than the sum of its proper divisors (137473886210).

709353057361 is a wasteful number, since it uses less digits than its factorization.

709353057361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 1786050, while the sum is 49.

Multiplying 709353057361 by its sum of digits (49), we get a square (34758299810689 = 5895617²).

The spelling of 709353057361 in words is "seven hundred nine billion, three hundred fifty-three million, fifty-seven thousand, three hundred sixty-one".