70591613723 has 4 divisors (see below), whose sum is σ = 70754643288. Its totient is φ = 70428584160.

The previous prime is 70591613689. The next prime is 70591613747. The reversal of 70591613723 is 32731619507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32731619507 = 467 ⋅70089121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70591613723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70591613423) 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 3 ways as a sum of consecutive naturals, for example, 81514133 + ... + 81514998.

It is an arithmetic number, because the mean of its divisors is an integer number (17688660822).

Almost surely, 2^70591613723 is an apocalyptic number.

70591613723 is a deficient number, since it is larger than the sum of its proper divisors (163029565).

70591613723 is a wasteful number, since it uses less digits than its factorization.

70591613723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163029564.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 70591613723 in words is "seventy billion, five hundred ninety-one million, six hundred thirteen thousand, seven hundred twenty-three".