85874351999 has 2 divisors, whose sum is σ = 85874352000. Its totient is φ = 85874351998.

The previous prime is 85874351989. The next prime is 85874352013. The reversal of 85874351999 is 99915347858.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85874351999 - 2¹² = 85874347903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85874351989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42937175999 + 42937176000.

It is an arithmetic number, because the mean of its divisors is an integer number (42937176000).

Almost surely, 2^85874351999 is an apocalyptic number.

85874351999 is a deficient number, since it is larger than the sum of its proper divisors (1).

85874351999 is an equidigital number, since it uses as much as digits as its factorization.

85874351999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 68.

The spelling of 85874351999 in words is "eighty-five billion, eight hundred seventy-four million, three hundred fifty-one thousand, nine hundred ninety-nine".