709181252641 has 9 divisors (see below), whose sum is σ = 753366919449. Its totient is φ = 667451234304.

The previous prime is 709181252623. The next prime is 709181252651. The reversal of 709181252641 is 146252181907.

The square root of 709181252641 is 842129.

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 46194475041 + 662986777600 = 214929^2 + 814240^2 .

It is not a de Polignac number, because 709181252641 - 2²³ = 709172864033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 709181252591 and 709181252600.

It is not an unprimeable number, because it can be changed into a prime (709181252651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14291425 + ... + 14340961.

Almost surely, 2^709181252641 is an apocalyptic number.

709181252641 is the 842129-th square number.

709181252641 is the 421065-th centered octagonal number.

It is an amenable number.

709181252641 is a deficient number, since it is larger than the sum of its proper divisors (44185666808).

709181252641 is an frugal number, since it uses more digits than its factorization.

709181252641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99108 (or 49554 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 709181252641 in words is "seven hundred nine billion, one hundred eighty-one million, two hundred fifty-two thousand, six hundred forty-one".