85413482521 has 2 divisors, whose sum is σ = 85413482522. Its totient is φ = 85413482520.

The previous prime is 85413482513. The next prime is 85413482543. The reversal of 85413482521 is 12528431458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83593265625 + 1820216896 = 289125^2 + 42664^2 .

It is a cyclic number.

It is not a de Polignac number, because 85413482521 - 2³ = 85413482513 is a prime.

It is not a weakly prime, because it can be changed into another prime (85413482621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42706741260 + 42706741261.

It is an arithmetic number, because the mean of its divisors is an integer number (42706741261).

Almost surely, 2^85413482521 is an apocalyptic number.

It is an amenable number.

85413482521 is a deficient number, since it is larger than the sum of its proper divisors (1).

85413482521 is an equidigital number, since it uses as much as digits as its factorization.

85413482521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 307200, while the sum is 43.

The spelling of 85413482521 in words is "eighty-five billion, four hundred thirteen million, four hundred eighty-two thousand, five hundred twenty-one".