846543507621 has 16 divisors (see below), whose sum is σ = 1295755689984. Its totient is φ = 481569910704.

The previous prime is 846543507617. The next prime is 846543507647. The reversal of 846543507621 is 126705345648.

It is not a de Polignac number, because 846543507621 - 2² = 846543507617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846543607621) 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 15 ways as a sum of consecutive naturals, for example, 90380061 + ... + 90389426.

It is an arithmetic number, because the mean of its divisors is an integer number (80984730624).

Almost surely, 2^846543507621 is an apocalyptic number.

It is an amenable number.

846543507621 is a deficient number, since it is larger than the sum of its proper divisors (449212182363).

846543507621 is a wasteful number, since it uses less digits than its factorization.

846543507621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180769720.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 846543507621 in words is "eight hundred forty-six billion, five hundred forty-three million, five hundred seven thousand, six hundred twenty-one".