220542646643 has 8 divisors (see below), whose sum is σ = 243490677696. Its totient is φ = 198077732200.

The previous prime is 220542646591. The next prime is 220542646669. The reversal of 220542646643 is 346646245022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220542646643 - 2¹² = 220542642547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220542646594 and 220542646603.

It is not an unprimeable number, because it can be changed into a prime (220542646693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120778193 + ... + 120780018.

It is an arithmetic number, because the mean of its divisors is an integer number (30436334712).

Almost surely, 2^220542646643 is an apocalyptic number.

220542646643 is a deficient number, since it is larger than the sum of its proper divisors (22948031053).

220542646643 is a wasteful number, since it uses less digits than its factorization.

220542646643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241558305.

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 220542646643 in words is "two hundred twenty billion, five hundred forty-two million, six hundred forty-six thousand, six hundred forty-three".