85780216821203 has 2 divisors, whose sum is σ = 85780216821204. Its totient is φ = 85780216821202.

The previous prime is 85780216821139. The next prime is 85780216821209. The reversal of 85780216821203 is 30212861208758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85780216821203 - 2⁶ = 85780216821139 is a prime.

It is a super-2 number, since 2×85780216821203² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85780216821209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42890108410601 + 42890108410602.

It is an arithmetic number, because the mean of its divisors is an integer number (42890108410602).

Almost surely, 2^{85780216821203} is an apocalyptic number.

85780216821203 is a deficient number, since it is larger than the sum of its proper divisors (1).

85780216821203 is an equidigital number, since it uses as much as digits as its factorization.

85780216821203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 85780216821203 in words is "eighty-five trillion, seven hundred eighty billion, two hundred sixteen million, eight hundred twenty-one thousand, two hundred three".