803778728128 has 28 divisors (see below), whose sum is σ = 1600029994752. Its totient is φ = 400621564160.

The previous prime is 803778728119. The next prime is 803778728183. The reversal of 803778728128 is 821827877308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19788928 + ... + 19829503.

It is an arithmetic number, because the mean of its divisors is an integer number (57143928384).

Almost surely, 2^803778728128 is an apocalyptic number.

It is an amenable number.

803778728128 is a deficient number, since it is larger than the sum of its proper divisors (796251266624).

803778728128 is a wasteful number, since it uses less digits than its factorization.

803778728128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39618760 (or 39618750 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 61.

The spelling of 803778728128 in words is "eight hundred three billion, seven hundred seventy-eight million, seven hundred twenty-eight thousand, one hundred twenty-eight".