728837378678 has 4 divisors (see below), whose sum is σ = 1093256068020. Its totient is φ = 364418689338.

The previous prime is 728837378653. The next prime is 728837378777. The reversal of 728837378678 is 876873738827.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182209344668 + ... + 182209344671.

It is an arithmetic number, because the mean of its divisors is an integer number (273314017005).

Almost surely, 2^728837378678 is an apocalyptic number.

728837378678 is a deficient number, since it is larger than the sum of its proper divisors (364418689342).

728837378678 is a wasteful number, since it uses less digits than its factorization.

728837378678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364418689341.

The product of its digits is 1062125568, while the sum is 74.

The spelling of 728837378678 in words is "seven hundred twenty-eight billion, eight hundred thirty-seven million, three hundred seventy-eight thousand, six hundred seventy-eight".