642276005573 has 4 divisors (see below), whose sum is σ = 642281748108. Its totient is φ = 642270263040.

The previous prime is 642276005521. The next prime is 642276005593. The reversal of 642276005573 is 375500672246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40500355009 + 601775650564 = 201247^2 + 775742^2 .

It is a cyclic number.

It is not a de Polignac number, because 642276005573 - 2⁶ = 642276005509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642276005593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2700098 + ... + 2928323.

It is an arithmetic number, because the mean of its divisors is an integer number (160570437027).

Almost surely, 2^642276005573 is an apocalyptic number.

It is an amenable number.

642276005573 is a deficient number, since it is larger than the sum of its proper divisors (5742535).

642276005573 is a wasteful number, since it uses less digits than its factorization.

642276005573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5742534.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 642276005573 in words is "six hundred forty-two billion, two hundred seventy-six million, five thousand, five hundred seventy-three".