673261577773 has 4 divisors (see below), whose sum is σ = 673265575168. Its totient is φ = 673257580380.

The previous prime is 673261577713. The next prime is 673261577827. The reversal of 673261577773 is 377775162376.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673261577773 - 2¹⁷ = 673261446701 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 (673261577713) 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, 1734411 + ... + 2086792.

It is an arithmetic number, because the mean of its divisors is an integer number (168316393792).

Almost surely, 2^673261577773 is an apocalyptic number.

It is an amenable number.

673261577773 is a deficient number, since it is larger than the sum of its proper divisors (3997395).

673261577773 is a wasteful number, since it uses less digits than its factorization.

673261577773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997394.

The product of its digits is 54454680, while the sum is 61.

The spelling of 673261577773 in words is "six hundred seventy-three billion, two hundred sixty-one million, five hundred seventy-seven thousand, seven hundred seventy-three".