428163118864 has 40 divisors (see below), whose sum is σ = 893772841752. Its totient is φ = 197526589440.

The previous prime is 428163118861. The next prime is 428163118913. The reversal of 428163118864 is 468811361824.

It can be written as a sum of positive squares in 4 ways, for example, as 110170886400 + 317992232464 = 331920^2 + 563908^2 .

It is a super-3 number, since 3×428163118864³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (428163118861) 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, 19974 + ... + 925594.

Almost surely, 2^428163118864 is an apocalyptic number.

It is an amenable number.

428163118864 is an abundant number, since it is smaller than the sum of its proper divisors (465609722888).

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

428163118864 is a wasteful number, since it uses less digits than its factorization.

428163118864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907915 (or 907909 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 52.

The spelling of 428163118864 in words is "four hundred twenty-eight billion, one hundred sixty-three million, one hundred eighteen thousand, eight hundred sixty-four".