216033542641 has 6 divisors (see below), whose sum is σ = 251304325170. Its totient is φ = 185171607936.

The previous prime is 216033542639. The next prime is 216033542653. The reversal of 216033542641 is 146245330612.

It can be written as a sum of positive squares in only one way, i.e., 128937728241 + 87095814400 = 359079^2 + 295120^2 .

It is not a de Polignac number, because 216033542641 - 2¹ = 216033542639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216033542641.

It is not an unprimeable number, because it can be changed into a prime (216033542141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2204423856 + ... + 2204423953.

It is an arithmetic number, because the mean of its divisors is an integer number (41884054195).

Almost surely, 2^216033542641 is an apocalyptic number.

It is an amenable number.

216033542641 is a deficient number, since it is larger than the sum of its proper divisors (35270782529).

216033542641 is an equidigital number, since it uses as much as digits as its factorization.

216033542641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408847823 (or 4408847816 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 216033542641 in words is "two hundred sixteen billion, thirty-three million, five hundred forty-two thousand, six hundred forty-one".