85479882813 has 24 divisors (see below), whose sum is σ = 133143574200. Its totient is φ = 52533826560.

The previous prime is 85479882809. The next prime is 85479882821. The reversal of 85479882813 is 31828897458.

85479882813 is a `hidden beast` number, since 8 + 5 + 479 + 8 + 82 + 81 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14661092889 + 70818789924 = 121083^2 + 266118^2 .

It is not a de Polignac number, because 85479882813 - 2² = 85479882809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85479882823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390988 + ... + 569061.

It is an arithmetic number, because the mean of its divisors is an integer number (5547648925).

Almost surely, 2^85479882813 is an apocalyptic number.

It is an amenable number.

85479882813 is a deficient number, since it is larger than the sum of its proper divisors (47663691387).

85479882813 is a wasteful number, since it uses less digits than its factorization.

85479882813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960829 (or 960826 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 85479882813 in words is "eighty-five billion, four hundred seventy-nine million, eight hundred eighty-two thousand, eight hundred thirteen".