805861101053 has 4 divisors (see below), whose sum is σ = 806024136768. Its totient is φ = 805698065340.

The previous prime is 805861100977. The next prime is 805861101107. The reversal of 805861101053 is 350101168508.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 805861101053 - 2¹⁰ = 805861100029 is a prime.

It is a super-2 number, since 2×805861101053² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 805861100998 and 805861101016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805861101953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81510443 + ... + 81520328.

It is an arithmetic number, because the mean of its divisors is an integer number (201506034192).

Almost surely, 2^805861101053 is an apocalyptic number.

It is an amenable number.

805861101053 is a deficient number, since it is larger than the sum of its proper divisors (163035715).

805861101053 is a wasteful number, since it uses less digits than its factorization.

805861101053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163035714.

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 805861101053 in words is "eight hundred five billion, eight hundred sixty-one million, one hundred one thousand, fifty-three".