212086783559 has 4 divisors (see below), whose sum is σ = 242384895504. Its totient is φ = 181788671616.

The previous prime is 212086783549. The next prime is 212086783603. The reversal of 212086783559 is 955387680212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212086783559 is a prime.

It is a super-2 number, since 2×212086783559² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212086783549) 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, 15149055962 + ... + 15149055975.

It is an arithmetic number, because the mean of its divisors is an integer number (60596223876).

Almost surely, 2^212086783559 is an apocalyptic number.

212086783559 is a deficient number, since it is larger than the sum of its proper divisors (30298111945).

212086783559 is an equidigital number, since it uses as much as digits as its factorization.

212086783559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30298111944.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 212086783559 in words is "two hundred twelve billion, eighty-six million, seven hundred eighty-three thousand, five hundred fifty-nine".