70736691043789 has 4 divisors (see below), whose sum is σ = 70754161211100. Its totient is φ = 70719220876480.

The previous prime is 70736691043783. The next prime is 70736691043817. The reversal of 70736691043789 is 98734019663707.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16792440188164 + 53944250855625 = 4097858^2 + 7344675^2 .

It is a cyclic number.

It is not a de Polignac number, because 70736691043789 - 2⁷ = 70736691043661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70736691043783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8735077582 + ... + 8735085679.

It is an arithmetic number, because the mean of its divisors is an integer number (17688540302775).

Almost surely, 2^{70736691043789} is an apocalyptic number.

It is an amenable number.

70736691043789 is a deficient number, since it is larger than the sum of its proper divisors (17470167311).

70736691043789 is a wasteful number, since it uses less digits than its factorization.

70736691043789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17470167310.

The product of its (nonzero) digits is 288054144, while the sum is 70.

The spelling of 70736691043789 in words is "seventy trillion, seven hundred thirty-six billion, six hundred ninety-one million, forty-three thousand, seven hundred eighty-nine".