85199766799158 has 48 divisors (see below), whose sum is σ = 201873641907600. Its totient is φ = 25754986160640.

The previous prime is 85199766799109. The next prime is 85199766799159.

85199766799158 is a `hidden beast` number, since 8 + 519 + 9 + 7 + 6 + 6 + 79 + 9 + 15 + 8 = 666.

85199766799158 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85199766799159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525960403 + ... + 526122366.

It is an arithmetic number, because the mean of its divisors is an integer number (4205700873075).

Almost surely, 2^{85199766799158} is an apocalyptic number.

85199766799158 is an abundant number, since it is smaller than the sum of its proper divisors (116673875108442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85199766799158 is a wasteful number, since it uses less digits than its factorization.

85199766799158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052083197 (or 1052083194 counting only the distinct ones).

The product of its digits is 18517766400, while the sum is 90.

The spelling of 85199766799158 in words is "eighty-five trillion, one hundred ninety-nine billion, seven hundred sixty-six million, seven hundred ninety-nine thousand, one hundred fifty-eight".