85794372661 has 2 divisors, whose sum is σ = 85794372662. Its totient is φ = 85794372660.

The previous prime is 85794372637. The next prime is 85794372683. The reversal of 85794372661 is 16627349758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53919626436 + 31874746225 = 232206^2 + 178535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85794372661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85794372596 and 85794372605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85794372361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42897186330 + 42897186331.

It is an arithmetic number, because the mean of its divisors is an integer number (42897186331).

Almost surely, 2^85794372661 is an apocalyptic number.

It is an amenable number.

85794372661 is a deficient number, since it is larger than the sum of its proper divisors (1).

85794372661 is an equidigital number, since it uses as much as digits as its factorization.

85794372661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 58.

The spelling of 85794372661 in words is "eighty-five billion, seven hundred ninety-four million, three hundred seventy-two thousand, six hundred sixty-one".