85846664851 has 2 divisors, whose sum is σ = 85846664852. Its totient is φ = 85846664850.

The previous prime is 85846664807. The next prime is 85846664993. The reversal of 85846664851 is 15846664858.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85846664851 - 2⁹ = 85846664339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85846664851.

It is not a weakly prime, because it can be changed into another prime (85846664251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42923332425 + 42923332426.

It is an arithmetic number, because the mean of its divisors is an integer number (42923332426).

Almost surely, 2^85846664851 is an apocalyptic number.

85846664851 is a deficient number, since it is larger than the sum of its proper divisors (1).

85846664851 is an equidigital number, since it uses as much as digits as its factorization.

85846664851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44236800, while the sum is 61.

The spelling of 85846664851 in words is "eighty-five billion, eight hundred forty-six million, six hundred sixty-four thousand, eight hundred fifty-one".