85878855833 has 2 divisors, whose sum is σ = 85878855834. Its totient is φ = 85878855832.

The previous prime is 85878855791. The next prime is 85878855869. The reversal of 85878855833 is 33855887858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79409549209 + 6469306624 = 281797^2 + 80432^2 .

It is a cyclic number.

It is not a de Polignac number, because 85878855833 - 2⁸ = 85878855577 is a prime.

It is not a weakly prime, because it can be changed into another prime (85878855533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42939427916 + 42939427917.

It is an arithmetic number, because the mean of its divisors is an integer number (42939427917).

Almost surely, 2^85878855833 is an apocalyptic number.

It is an amenable number.

85878855833 is a deficient number, since it is larger than the sum of its proper divisors (1).

85878855833 is an equidigital number, since it uses as much as digits as its factorization.

85878855833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048000, while the sum is 68.

The spelling of 85878855833 in words is "eighty-five billion, eight hundred seventy-eight million, eight hundred fifty-five thousand, eight hundred thirty-three".