673444100401 has 4 divisors (see below), whose sum is σ = 689105591152. Its totient is φ = 657782609652.

The previous prime is 673444100339. The next prime is 673444100419. The reversal of 673444100401 is 104001444376.

673444100401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 673444100401 - 2²¹ = 673442003249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673444100201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7830745311 + ... + 7830745396.

It is an arithmetic number, because the mean of its divisors is an integer number (172276397788).

Almost surely, 2^673444100401 is an apocalyptic number.

It is an amenable number.

673444100401 is a deficient number, since it is larger than the sum of its proper divisors (15661490751).

673444100401 is a wasteful number, since it uses less digits than its factorization.

673444100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15661490750.

The product of its (nonzero) digits is 32256, while the sum is 34.

Adding to 673444100401 its reverse (104001444376), we get a palindrome (777445544777).

The spelling of 673444100401 in words is "six hundred seventy-three billion, four hundred forty-four million, one hundred thousand, four hundred one".