85915670345 has 4 divisors (see below), whose sum is σ = 103098804420. Its totient is φ = 68732536272.

The previous prime is 85915670311. The next prime is 85915670359. The reversal of 85915670345 is 54307651958.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20184453184 + 65731217161 = 142072^2 + 256381^2 .

It is a cyclic number.

It is not a de Polignac number, because 85915670345 - 2¹⁶ = 85915604809 is a prime.

It is a super-3 number, since 3×85915670345³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8591567030 + ... + 8591567039.

It is an arithmetic number, because the mean of its divisors is an integer number (25774701105).

Almost surely, 2^85915670345 is an apocalyptic number.

It is an amenable number.

85915670345 is a deficient number, since it is larger than the sum of its proper divisors (17183134075).

85915670345 is a wasteful number, since it uses less digits than its factorization.

85915670345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17183134074.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 85915670345 in words is "eighty-five billion, nine hundred fifteen million, six hundred seventy thousand, three hundred forty-five".