672280348129 has 8 divisors (see below), whose sum is σ = 728179161192. Its totient is φ = 616979383680.

The previous prime is 672280348099. The next prime is 672280348139. The reversal of 672280348129 is 921843082276.

It can be written as a sum of positive squares in 4 ways, for example, as 209880348129 + 462400000000 = 458127^2 + 680000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 672280348129 - 2⁵ = 672280348097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672280348139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149459812 + ... + 149464309.

It is an arithmetic number, because the mean of its divisors is an integer number (91022395149).

Almost surely, 2^672280348129 is an apocalyptic number.

It is an amenable number.

672280348129 is a deficient number, since it is larger than the sum of its proper divisors (55898813063).

672280348129 is a wasteful number, since it uses less digits than its factorization.

672280348129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298924307.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 672280348129 in words is "six hundred seventy-two billion, two hundred eighty million, three hundred forty-eight thousand, one hundred twenty-nine".