428767694495856 has 80 divisors (see below), whose sum is σ = 1231818010942720. Its totient is φ = 142795296135360.

The previous prime is 428767694495827. The next prime is 428767694495857. The reversal of 428767694495856 is 658594496767824.

428767694495856 is a `hidden beast` number, since 4 + 2 + 8 + 7 + 6 + 7 + 69 + 4 + 495 + 8 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428767694495857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441419500 + ... + 442389771.

It is an arithmetic number, because the mean of its divisors is an integer number (15397725136784).

Almost surely, 2^{428767694495856} is an apocalyptic number.

It is an amenable number.

428767694495856 is an abundant number, since it is smaller than the sum of its proper divisors (803050316446864).

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

428767694495856 is a wasteful number, since it uses less digits than its factorization.

428767694495856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883810411 (or 883810399 counting only the distinct ones).

The product of its digits is 175575859200, while the sum is 90.

The spelling of 428767694495856 in words is "four hundred twenty-eight trillion, seven hundred sixty-seven billion, six hundred ninety-four million, four hundred ninety-five thousand, eight hundred fifty-six".