217683373707 has 48 divisors (see below), whose sum is σ = 330950880000. Its totient is φ = 137612312640.

The previous prime is 217683373643. The next prime is 217683373769. The reversal of 217683373707 is 707373386712.

217683373707 is a `hidden beast` number, since 217 + 68 + 337 + 37 + 0 + 7 = 666.

It is not a de Polignac number, because 217683373707 - 2⁶ = 217683373643 is a prime.

It is a super-2 number, since 2×217683373707² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (217683373777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12255669 + ... + 12273417.

It is an arithmetic number, because the mean of its divisors is an integer number (6894810000).

Almost surely, 2^217683373707 is an apocalyptic number.

217683373707 is a deficient number, since it is larger than the sum of its proper divisors (113267506293).

217683373707 is a wasteful number, since it uses less digits than its factorization.

217683373707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18288 (or 18285 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 54.

The spelling of 217683373707 in words is "two hundred seventeen billion, six hundred eighty-three million, three hundred seventy-three thousand, seven hundred seven".