217980480241 has 4 divisors (see below), whose sum is σ = 218069563392. Its totient is φ = 217891397092.

The previous prime is 217980480227. The next prime is 217980480251. The reversal of 217980480241 is 142084089712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 217980480241 - 2³¹ = 215832996593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 217980480191 and 217980480200.

It is not an unprimeable number, because it can be changed into a prime (217980480251) 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 3 ways as a sum of consecutive naturals, for example, 44537905 + ... + 44542798.

It is an arithmetic number, because the mean of its divisors is an integer number (54517390848).

Almost surely, 2^217980480241 is an apocalyptic number.

It is an amenable number.

217980480241 is a deficient number, since it is larger than the sum of its proper divisors (89083151).

217980480241 is an equidigital number, since it uses as much as digits as its factorization.

217980480241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89083150.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 217980480241 in words is "two hundred seventeen billion, nine hundred eighty million, four hundred eighty thousand, two hundred forty-one".