7817085445 has 32 divisors (see below), whose sum is σ = 10304630784. Its totient is φ = 5657836800.

The previous prime is 7817085443. The next prime is 7817085473. The reversal of 7817085445 is 5445807187.

It is not a de Polignac number, because 7817085445 - 2¹ = 7817085443 is a prime.

It is a super-2 number, since 2×7817085445² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7817085443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793500 + ... + 803290.

It is an arithmetic number, because the mean of its divisors is an integer number (322019712).

Almost surely, 2^7817085445 is an apocalyptic number.

It is an amenable number.

7817085445 is a deficient number, since it is larger than the sum of its proper divisors (2487545339).

7817085445 is a wasteful number, since it uses less digits than its factorization.

7817085445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053.

The product of its (nonzero) digits is 1254400, while the sum is 49.

The square root of 7817085445 is about 88414.2830373012. The cubic root of 7817085445 is about 1984.6394491783.

The spelling of 7817085445 in words is "seven billion, eight hundred seventeen million, eighty-five thousand, four hundred forty-five".