545643565401 has 32 divisors (see below), whose sum is σ = 796438241280. Its totient is φ = 329537520000.

The previous prime is 545643565399. The next prime is 545643565433. The reversal of 545643565401 is 104565346545.

It is a happy number.

It is not a de Polignac number, because 545643565401 - 2¹ = 545643565399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545643565451) 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 31 ways as a sum of consecutive naturals, for example, 49067520 + ... + 49078638.

It is an arithmetic number, because the mean of its divisors is an integer number (24888695040).

Almost surely, 2^545643565401 is an apocalyptic number.

It is an amenable number.

545643565401 is a deficient number, since it is larger than the sum of its proper divisors (250794675879).

545643565401 is a wasteful number, since it uses less digits than its factorization.

545643565401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16197.

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 545643565401 in words is "five hundred forty-five billion, six hundred forty-three million, five hundred sixty-five thousand, four hundred one".