545620454211021 has 24 divisors (see below), whose sum is σ = 846628421192064. Its totient is φ = 311650499260800.

The previous prime is 545620454210981. The next prime is 545620454211097. The reversal of 545620454211021 is 120112454026545.

It is not a de Polignac number, because 545620454211021 - 2¹⁰ = 545620454209997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545620454211821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789042700 + ... + 789733893.

It is an arithmetic number, because the mean of its divisors is an integer number (35276184216336).

Almost surely, 2^{545620454211021} is an apocalyptic number.

It is an amenable number.

545620454211021 is a deficient number, since it is larger than the sum of its proper divisors (301007966981043).

545620454211021 is a wasteful number, since it uses less digits than its factorization.

545620454211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578778961 (or 1578778954 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 545620454211021 in words is "five hundred forty-five trillion, six hundred twenty billion, four hundred fifty-four million, two hundred eleven thousand, twenty-one".