70806808165 has 8 divisors (see below), whose sum is σ = 84994568568. Its totient is φ = 56627847360.

The previous prime is 70806808141. The next prime is 70806808201. The reversal of 70806808165 is 56180860807.

It can be written as a sum of positive squares in 4 ways, for example, as 4828721121 + 65978087044 = 69489^2 + 256862^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-70806808165 is a prime.

It is a super-2 number, since 2×70806808165² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2182182 + ... + 2214391.

It is an arithmetic number, because the mean of its divisors is an integer number (10624321071).

Almost surely, 2^70806808165 is an apocalyptic number.

It is an amenable number.

70806808165 is a deficient number, since it is larger than the sum of its proper divisors (14187760403).

70806808165 is a wasteful number, since it uses less digits than its factorization.

70806808165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399799.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 70806808165 in words is "seventy billion, eight hundred six million, eight hundred eight thousand, one hundred sixty-five".