85112052481 has 2 divisors, whose sum is σ = 85112052482. Its totient is φ = 85112052480.

The previous prime is 85112052413. The next prime is 85112052541. The reversal of 85112052481 is 18425021158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68897850256 + 16214202225 = 262484^2 + 127335^2 .

It is a cyclic number.

It is not a de Polignac number, because 85112052481 - 2¹³ = 85112044289 is a prime.

It is a super-2 number, since 2×85112052481² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85112052481.

It is not a weakly prime, because it can be changed into another prime (85112050481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42556026240 + 42556026241.

It is an arithmetic number, because the mean of its divisors is an integer number (42556026241).

Almost surely, 2^85112052481 is an apocalyptic number.

It is an amenable number.

85112052481 is a deficient number, since it is larger than the sum of its proper divisors (1).

85112052481 is an equidigital number, since it uses as much as digits as its factorization.

85112052481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25600, while the sum is 37.

The spelling of 85112052481 in words is "eighty-five billion, one hundred twelve million, fifty-two thousand, four hundred eighty-one".