216000063406646 has 4 divisors (see below), whose sum is σ = 324000095109972. Its totient is φ = 108000031703322.

The previous prime is 216000063406643. The next prime is 216000063406667. The reversal of 216000063406646 is 646604360000612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 216000063406597 and 216000063406606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216000063406643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54000015851660 + ... + 54000015851663.

It is an arithmetic number, because the mean of its divisors is an integer number (81000023777493).

Almost surely, 2^{216000063406646} is an apocalyptic number.

216000063406646 is a deficient number, since it is larger than the sum of its proper divisors (108000031703326).

216000063406646 is a wasteful number, since it uses less digits than its factorization.

216000063406646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108000031703325.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 216000063406646 in words is "two hundred sixteen trillion, sixty-three million, four hundred six thousand, six hundred forty-six".