673444100400 has 60 divisors (see below), whose sum is σ = 2157265938792. Its totient is φ = 179585093120.

The previous prime is 673444100339. The next prime is 673444100419. The reversal of 673444100400 is 4001444376.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 280600509 + ... + 280602908.

Almost surely, 2^673444100400 is an apocalyptic number.

673444100400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

673444100400 is an abundant number, since it is smaller than the sum of its proper divisors (1483821838392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673444100400 is a wasteful number, since it uses less digits than its factorization.

673444100400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561203438 (or 561203427 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 673444100400 its reverse (4001444376), we get a palindrome (677445544776).

The spelling of 673444100400 in words is "six hundred seventy-three billion, four hundred forty-four million, one hundred thousand, four hundred".