16424361665646 has 32 divisors (see below), whose sum is σ = 35835170646528. Its totient is φ = 4977051551040.

The previous prime is 16424361665641. The next prime is 16424361665659. The reversal of 16424361665646 is 64656616342461.

It is a super-2 number, since 2×16424361665646² (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 16424361665646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16424361665641) 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, 13386306 + ... + 14561658.

It is an arithmetic number, because the mean of its divisors is an integer number (1119849082704).

Almost surely, 2^{16424361665646} is an apocalyptic number.

16424361665646 is an abundant number, since it is smaller than the sum of its proper divisors (19410808980882).

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

16424361665646 is a wasteful number, since it uses less digits than its factorization.

16424361665646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387096.

The product of its digits is 89579520, while the sum is 60.

The spelling of 16424361665646 in words is "sixteen trillion, four hundred twenty-four billion, three hundred sixty-one million, six hundred sixty-five thousand, six hundred forty-six".