70681734861049 has 15 divisors (see below), whose sum is σ = 76573212455337. Its totient is φ = 65243366803368.

The previous prime is 70681734861047. The next prime is 70681734861113. The reversal of 70681734861049 is 94016843718607.

The square root of 70681734861049 is 8407243.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35045133131449 + 35636601729600 = 5919893^2 + 5969640^2 .

It is not a de Polignac number, because 70681734861049 - 2¹ = 70681734861047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70681734861047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1420799194 + ... + 1420848940.

Almost surely, 2^{70681734861049} is an apocalyptic number.

70681734861049 is the 8407243-rd square number.

70681734861049 is the 4203622-nd centered octagonal number.

It is an amenable number.

70681734861049 is a deficient number, since it is larger than the sum of its proper divisors (5891477594288).

70681734861049 is an frugal number, since it uses more digits than its factorization.

70681734861049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99546 (or 49760 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 70681734861049 in words is "seventy trillion, six hundred eighty-one billion, seven hundred thirty-four million, eight hundred sixty-one thousand, forty-nine".