70509771085 has 8 divisors (see below), whose sum is σ = 91120319640. Its totient is φ = 52068753984.

The previous prime is 70509771071. The next prime is 70509771089. The reversal of 70509771085 is 58017790507.

It can be written as a sum of positive squares in 4 ways, for example, as 5287762089 + 65222008996 = 72717^2 + 255386^2 .

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

It is not a de Polignac number, because 70509771085 - 2⁵ = 70509771053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70509771089) 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 7 ways as a sum of consecutive naturals, for example, 542382790 + ... + 542382919.

It is an arithmetic number, because the mean of its divisors is an integer number (11390039955).

Almost surely, 2^70509771085 is an apocalyptic number.

It is an amenable number.

70509771085 is a deficient number, since it is larger than the sum of its proper divisors (20610548555).

70509771085 is a wasteful number, since it uses less digits than its factorization.

70509771085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084765727.

The product of its (nonzero) digits is 617400, while the sum is 49.

The spelling of 70509771085 in words is "seventy billion, five hundred nine million, seven hundred seventy-one thousand, eighty-five".