545213033521 has 24 divisors (see below), whose sum is σ = 633032133440. Its totient is φ = 466599336192.

The previous prime is 545213033513. The next prime is 545213033543. The reversal of 545213033521 is 125330312545.

It is not a de Polignac number, because 545213033521 - 2³ = 545213033513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545213033501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 831261 + ... + 1334698.

Almost surely, 2^545213033521 is an apocalyptic number.

It is an amenable number.

545213033521 is a deficient number, since it is larger than the sum of its proper divisors (87819099919).

545213033521 is a wasteful number, since it uses less digits than its factorization.

545213033521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166073 (or 2166056 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 545213033521 in words is "five hundred forty-five billion, two hundred thirteen million, thirty-three thousand, five hundred twenty-one".