16662416220324 has 72 divisors (see below), whose sum is σ = 48142303792128. Its totient is φ = 4760053948800.

The previous prime is 16662416220283. The next prime is 16662416220371. The reversal of 16662416220324 is 42302261426661.

It is a happy number.

It is a super-2 number, since 2×16662416220324² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16662416220324.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2528977 + ... + 6302424.

It is an arithmetic number, because the mean of its divisors is an integer number (668643108224).

Almost surely, 2^{16662416220324} is an apocalyptic number.

16662416220324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16662416220324 is an abundant number, since it is smaller than the sum of its proper divisors (31479887571804).

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

16662416220324 is a wasteful number, since it uses less digits than its factorization.

16662416220324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8838905 (or 8838900 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

Adding to 16662416220324 its reverse (42302261426661), we get a palindrome (58964677646985).

The spelling of 16662416220324 in words is "sixteen trillion, six hundred sixty-two billion, four hundred sixteen million, two hundred twenty thousand, three hundred twenty-four".