853997156183 has 4 divisors (see below), whose sum is σ = 873857555208. Its totient is φ = 834136757160.

The previous prime is 853997156179. The next prime is 853997156237. The reversal of 853997156183 is 381651799358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 853997156183 - 2² = 853997156179 is a prime.

It is a super-3 number, since 3×853997156183³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853997156483) 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 3 ways as a sum of consecutive naturals, for example, 9930199448 + ... + 9930199533.

It is an arithmetic number, because the mean of its divisors is an integer number (218464388802).

Almost surely, 2^853997156183 is an apocalyptic number.

853997156183 is a deficient number, since it is larger than the sum of its proper divisors (19860399025).

853997156183 is a wasteful number, since it uses less digits than its factorization.

853997156183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19860399024.

The product of its digits is 48988800, while the sum is 65.

The spelling of 853997156183 in words is "eight hundred fifty-three billion, nine hundred ninety-seven million, one hundred fifty-six thousand, one hundred eighty-three".