85336705561 has 2 divisors, whose sum is σ = 85336705562. Its totient is φ = 85336705560.

The previous prime is 85336705549. The next prime is 85336705603. The reversal of 85336705561 is 16550763358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48805646400 + 36531059161 = 220920^2 + 191131^2 .

It is a cyclic number.

It is not a de Polignac number, because 85336705561 - 2¹⁵ = 85336672793 is a prime.

It is not a weakly prime, because it can be changed into another prime (85336705511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42668352780 + 42668352781.

It is an arithmetic number, because the mean of its divisors is an integer number (42668352781).

Almost surely, 2^85336705561 is an apocalyptic number.

It is an amenable number.

85336705561 is a deficient number, since it is larger than the sum of its proper divisors (1).

85336705561 is an equidigital number, since it uses as much as digits as its factorization.

85336705561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 85336705561 in words is "eighty-five billion, three hundred thirty-six million, seven hundred five thousand, five hundred sixty-one".