85246477321 has 2 divisors, whose sum is σ = 85246477322. Its totient is φ = 85246477320.

The previous prime is 85246477313. The next prime is 85246477333. The reversal of 85246477321 is 12377464258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46671553296 + 38574924025 = 216036^2 + 196405^2 .

It is a cyclic number.

It is not a de Polignac number, because 85246477321 - 2³ = 85246477313 is a prime.

It is not a weakly prime, because it can be changed into another prime (85246477721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42623238660 + 42623238661.

It is an arithmetic number, because the mean of its divisors is an integer number (42623238661).

Almost surely, 2^85246477321 is an apocalyptic number.

It is an amenable number.

85246477321 is a deficient number, since it is larger than the sum of its proper divisors (1).

85246477321 is an equidigital number, since it uses as much as digits as its factorization.

85246477321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 49.

The spelling of 85246477321 in words is "eighty-five billion, two hundred forty-six million, four hundred seventy-seven thousand, three hundred twenty-one".