70591679509 has 8 divisors (see below), whose sum is σ = 76040865432. Its totient is φ = 65145216000.

The previous prime is 70591679503. The next prime is 70591679513. The reversal of 70591679509 is 90597619507.

It can be written as a sum of positive squares in 4 ways, for example, as 3981231409 + 66610448100 = 63097^2 + 258090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70591679509 - 2¹³ = 70591671317 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 (70591679503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626584 + ... + 730609.

It is an arithmetic number, because the mean of its divisors is an integer number (9505108179).

Almost surely, 2^70591679509 is an apocalyptic number.

It is an amenable number.

70591679509 is a deficient number, since it is larger than the sum of its proper divisors (5449185923).

70591679509 is a wasteful number, since it uses less digits than its factorization.

70591679509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361207.

The product of its (nonzero) digits is 5358150, while the sum is 58.

The spelling of 70591679509 in words is "seventy billion, five hundred ninety-one million, six hundred seventy-nine thousand, five hundred nine".