673809442336 has 12 divisors (see below), whose sum is σ = 1326562339662. Its totient is φ = 336904721152.

The previous prime is 673809442331. The next prime is 673809442337. The reversal of 673809442336 is 633244908376.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 505299192336 + 168510250000 = 710844^2 + 410500^2 .

It is not an unprimeable number, because it can be changed into a prime (673809442331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10528272505 + ... + 10528272568.

Almost surely, 2^673809442336 is an apocalyptic number.

It is an amenable number.

673809442336 is a deficient number, since it is larger than the sum of its proper divisors (652752897326).

673809442336 is a wasteful number, since it uses less digits than its factorization.

673809442336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21056545083 (or 21056545075 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 55.

The spelling of 673809442336 in words is "six hundred seventy-three billion, eight hundred nine million, four hundred forty-two thousand, three hundred thirty-six".