217437340268 has 48 divisors (see below), whose sum is σ = 385813612800. Its totient is φ = 107217190080.

The previous prime is 217437340213. The next prime is 217437340297. The reversal of 217437340268 is 862043734712.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94086833 + ... + 94089143.

It is an arithmetic number, because the mean of its divisors is an integer number (8037783600).

Almost surely, 2^217437340268 is an apocalyptic number.

It is an amenable number.

217437340268 is a deficient number, since it is larger than the sum of its proper divisors (168376272532).

217437340268 is a wasteful number, since it uses less digits than its factorization.

217437340268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510 (or 3508 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 217437340268 in words is "two hundred seventeen billion, four hundred thirty-seven million, three hundred forty thousand, two hundred sixty-eight".