85223620208851 has 2 divisors, whose sum is σ = 85223620208852. Its totient is φ = 85223620208850.

The previous prime is 85223620208843. The next prime is 85223620208927. The reversal of 85223620208851 is 15880202632258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85223620208851 - 2³ = 85223620208843 is a prime.

It is not a weakly prime, because it can be changed into another prime (85223620208651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42611810104425 + 42611810104426.

It is an arithmetic number, because the mean of its divisors is an integer number (42611810104426).

Almost surely, 2^{85223620208851} is an apocalyptic number.

85223620208851 is a deficient number, since it is larger than the sum of its proper divisors (1).

85223620208851 is an equidigital number, since it uses as much as digits as its factorization.

85223620208851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 85223620208851 in words is "eighty-five trillion, two hundred twenty-three billion, six hundred twenty million, two hundred eight thousand, eight hundred fifty-one".