846223322649 has 4 divisors (see below), whose sum is σ = 1128297763536. Its totient is φ = 564148881764.

The previous prime is 846223322621. The next prime is 846223322657. The reversal of 846223322649 is 946223322648.

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 846223322649 - 2²⁷ = 846089104921 is a prime.

It is a super-2 number, since 2×846223322649² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (846223322249) 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, 141037220439 + ... + 141037220444.

It is an arithmetic number, because the mean of its divisors is an integer number (282074440884).

Almost surely, 2^846223322649 is an apocalyptic number.

It is an amenable number.

846223322649 is a deficient number, since it is larger than the sum of its proper divisors (282074440887).

846223322649 is a wasteful number, since it uses less digits than its factorization.

846223322649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282074440886.

The product of its digits is 5971968, while the sum is 51.

Subtracting 846223322649 from its reverse (946223322648), we obtain a palindrome (99999999999).

The spelling of 846223322649 in words is "eight hundred forty-six billion, two hundred twenty-three million, three hundred twenty-two thousand, six hundred forty-nine".