545423443551 has 48 divisors (see below), whose sum is σ = 947864736000. Its totient is φ = 295237332864.

The previous prime is 545423443529. The next prime is 545423443567. The reversal of 545423443551 is 155344324545.

545423443551 is a `hidden beast` number, since 5 + 4 + 54 + 2 + 3 + 4 + 43 + 551 = 666.

It is not a de Polignac number, because 545423443551 - 2¹⁴ = 545423427167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545423443497 and 545423443506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545423443351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17780475 + ... + 17811123.

It is an arithmetic number, because the mean of its divisors is an integer number (19747182000).

Almost surely, 2^545423443551 is an apocalyptic number.

545423443551 is a deficient number, since it is larger than the sum of its proper divisors (402441292449).

545423443551 is a wasteful number, since it uses less digits than its factorization.

545423443551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45548 (or 45545 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 45.

The spelling of 545423443551 in words is "five hundred forty-five billion, four hundred twenty-three million, four hundred forty-three thousand, five hundred fifty-one".