217104320676 has 96 divisors (see below), whose sum is σ = 513793308672. Its totient is φ = 71346562560.

The previous prime is 217104320659. The next prime is 217104320677. The reversal of 217104320676 is 676023401712.

It is not an unprimeable number, because it can be changed into a prime (217104320677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272401510 + ... + 272402306.

It is an arithmetic number, because the mean of its divisors is an integer number (5352013632).

Almost surely, 2^217104320676 is an apocalyptic number.

It is an amenable number.

217104320676 is an abundant number, since it is smaller than the sum of its proper divisors (296688987996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217104320676 is a wasteful number, since it uses less digits than its factorization.

217104320676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 217104320676 in words is "two hundred seventeen billion, one hundred four million, three hundred twenty thousand, six hundred seventy-six".