54643425621 has 16 divisors (see below), whose sum is σ = 73928735040. Its totient is φ = 35894517120.

The previous prime is 54643425607. The next prime is 54643425659. The reversal of 54643425621 is 12652434645.

It is a happy number.

It is not a de Polignac number, because 54643425621 - 2¹⁰ = 54643424597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54643425671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100731 + ... + 345591.

It is an arithmetic number, because the mean of its divisors is an integer number (4620545940).

Almost surely, 2^54643425621 is an apocalyptic number.

It is an amenable number.

54643425621 is a deficient number, since it is larger than the sum of its proper divisors (19285309419).

54643425621 is a wasteful number, since it uses less digits than its factorization.

54643425621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245956.

The product of its digits is 691200, while the sum is 42.

The spelling of 54643425621 in words is "fifty-four billion, six hundred forty-three million, four hundred twenty-five thousand, six hundred twenty-one".