428247641816 has 32 divisors (see below), whose sum is σ = 815007744000. Its totient is φ = 210912705696.

The previous prime is 428247641779. The next prime is 428247641819. The reversal of 428247641816 is 618146742824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428247641819) 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, 12331565 + ... + 12366243.

It is an arithmetic number, because the mean of its divisors is an integer number (25468992000).

Almost surely, 2^428247641816 is an apocalyptic number.

It is an amenable number.

428247641816 is a deficient number, since it is larger than the sum of its proper divisors (386760102184).

428247641816 is a wasteful number, since it uses less digits than its factorization.

428247641816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57791 (or 57787 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 53.

The spelling of 428247641816 in words is "four hundred twenty-eight billion, two hundred forty-seven million, six hundred forty-one thousand, eight hundred sixteen".