844218633061 has 4 divisors (see below), whose sum is σ = 871451492224. Its totient is φ = 816985773900.

The previous prime is 844218633053. The next prime is 844218633073. The reversal of 844218633061 is 160336812448.

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 844218633061 - 2³ = 844218633053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844218633001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13616429535 + ... + 13616429596.

It is an arithmetic number, because the mean of its divisors is an integer number (217862873056).

Almost surely, 2^844218633061 is an apocalyptic number.

It is an amenable number.

844218633061 is a deficient number, since it is larger than the sum of its proper divisors (27232859163).

844218633061 is a wasteful number, since it uses less digits than its factorization.

844218633061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27232859162.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 844218633061 in words is "eight hundred forty-four billion, two hundred eighteen million, six hundred thirty-three thousand, sixty-one".