85158783381 has 16 divisors (see below), whose sum is σ = 130592303744. Its totient is φ = 48352209984.

The previous prime is 85158783379. The next prime is 85158783431. The reversal of 85158783381 is 18338785158.

It is not a de Polignac number, because 85158783381 - 2¹ = 85158783379 is a prime.

It is a super-3 number, since 3×85158783381³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85158783361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12911290 + ... + 12917883.

It is an arithmetic number, because the mean of its divisors is an integer number (8162018984).

Almost surely, 2^85158783381 is an apocalyptic number.

It is an amenable number.

85158783381 is a deficient number, since it is larger than the sum of its proper divisors (45433520363).

85158783381 is a wasteful number, since it uses less digits than its factorization.

85158783381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25829340.

The product of its digits is 6451200, while the sum is 57.

The spelling of 85158783381 in words is "eighty-five billion, one hundred fifty-eight million, seven hundred eighty-three thousand, three hundred eighty-one".