672320863845378 has 40 divisors (see below), whose sum is σ = 1643451000515280. Its totient is φ = 203733595104120.

The previous prime is 672320863845331. The next prime is 672320863845413. The reversal of 672320863845378 is 873548368023276.

672320863845378 is a `hidden beast` number, since 6 + 7 + 2 + 3 + 2 + 0 + 8 + 6 + 3 + 84 + 537 + 8 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 188642215908 + ... + 188642219471.

It is an arithmetic number, because the mean of its divisors is an integer number (41086275012882).

Almost surely, 2^{672320863845378} is an apocalyptic number.

672320863845378 is an abundant number, since it is smaller than the sum of its proper divisors (971130136669902).

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

672320863845378 is a wasteful number, since it uses less digits than its factorization.

672320863845378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377284435404 (or 377284435395 counting only the distinct ones).

The product of its (nonzero) digits is 1950842880, while the sum is 72.

The spelling of 672320863845378 in words is "six hundred seventy-two trillion, three hundred twenty billion, eight hundred sixty-three million, eight hundred forty-five thousand, three hundred seventy-eight".