85905199967 has 2 divisors, whose sum is σ = 85905199968. Its totient is φ = 85905199966.

The previous prime is 85905199907. The next prime is 85905199993. The reversal of 85905199967 is 76999150958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85905199967 - 2²⁶ = 85838091103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85905199897 and 85905199906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85905199907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42952599983 + 42952599984.

It is an arithmetic number, because the mean of its divisors is an integer number (42952599984).

Almost surely, 2^85905199967 is an apocalyptic number.

85905199967 is a deficient number, since it is larger than the sum of its proper divisors (1).

85905199967 is an equidigital number, since it uses as much as digits as its factorization.

85905199967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55112400, while the sum is 68.

The spelling of 85905199967 in words is "eighty-five billion, nine hundred five million, one hundred ninety-nine thousand, nine hundred sixty-seven".