216234557641 has 8 divisors (see below), whose sum is σ = 228654010368. Its totient is φ = 204155364000.

The previous prime is 216234557639. The next prime is 216234557657. The reversal of 216234557641 is 146755432612.

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 216234557641 - 2¹ = 216234557639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216234557591 and 216234557600.

It is not an unprimeable number, because it can be changed into a prime (216234557941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85063465 + ... + 85066006.

It is an arithmetic number, because the mean of its divisors is an integer number (28581751296).

Almost surely, 2^216234557641 is an apocalyptic number.

It is an amenable number.

216234557641 is a deficient number, since it is larger than the sum of its proper divisors (12419452727).

216234557641 is a wasteful number, since it uses less digits than its factorization.

216234557641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170129543.

The product of its digits is 1209600, while the sum is 46.

The spelling of 216234557641 in words is "two hundred sixteen billion, two hundred thirty-four million, five hundred fifty-seven thousand, six hundred forty-one".