85563519361 has 6 divisors (see below), whose sum is σ = 86785617986. Its totient is φ = 84358394400.

The previous prime is 85563519359. The next prime is 85563519389. The reversal of 85563519361 is 16391536558.

It can be written as a sum of positive squares in only one way, i.e., 46464389136 + 39099130225 = 215556^2 + 197735^2 .

It is not a de Polignac number, because 85563519361 - 2¹ = 85563519359 is a prime.

It is a super-2 number, since 2×85563519361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85563519299 and 85563519308.

It is not an unprimeable number, because it can be changed into a prime (85563519311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8481720 + ... + 8491801.

Almost surely, 2^85563519361 is an apocalyptic number.

It is an amenable number.

85563519361 is a deficient number, since it is larger than the sum of its proper divisors (1222098625).

85563519361 is an equidigital number, since it uses as much as digits as its factorization.

85563519361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16973663 (or 16973592 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 52.

The spelling of 85563519361 in words is "eighty-five billion, five hundred sixty-three million, five hundred nineteen thousand, three hundred sixty-one".