428669795544 has 32 divisors (see below), whose sum is σ = 1072207515840. Its totient is φ = 142818861600.

The previous prime is 428669795539. The next prime is 428669795563. The reversal of 428669795544 is 445597966824.

It is a super-2 number, since 2×428669795544² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4392622 + ... + 4489149.

It is an arithmetic number, because the mean of its divisors is an integer number (33506484870).

Almost surely, 2^428669795544 is an apocalyptic number.

It is an amenable number.

428669795544 is an abundant number, since it is smaller than the sum of its proper divisors (643537720296).

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

428669795544 is a wasteful number, since it uses less digits than its factorization.

428669795544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8883791 (or 8883787 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 69.

The spelling of 428669795544 in words is "four hundred twenty-eight billion, six hundred sixty-nine million, seven hundred ninety-five thousand, five hundred forty-four".