870135069697 has 6 divisors (see below), whose sum is σ = 882218016582. Its totient is φ = 858215405952.

The previous prime is 870135069649. The next prime is 870135069701. The reversal of 870135069697 is 796960531078.

It can be written as a sum of positive squares in 3 ways, for example, as 291221043201 + 578914026496 = 539649^2 + 760864^2 .

It is a de Polignac number, because none of the positive numbers 2^k-870135069697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870135069197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81636168 + ... + 81646825.

It is an arithmetic number, because the mean of its divisors is an integer number (147036336097).

Almost surely, 2^870135069697 is an apocalyptic number.

It is an amenable number.

870135069697 is a deficient number, since it is larger than the sum of its proper divisors (12082946885).

870135069697 is an equidigital number, since it uses as much as digits as its factorization.

870135069697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163283139 (or 163283066 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 870135069697 in words is "eight hundred seventy billion, one hundred thirty-five million, sixty-nine thousand, six hundred ninety-seven".