217828287007 has 8 divisors (see below), whose sum is σ = 218672294720. Its totient is φ = 216984575520.

The previous prime is 217828286993. The next prime is 217828287049. The reversal of 217828287007 is 700782828712.

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 217828287007 - 2²³ = 217819898399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217828287077) 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, 1460869 + ... + 1603057.

It is an arithmetic number, because the mean of its divisors is an integer number (27334036840).

Almost surely, 2^217828287007 is an apocalyptic number.

217828287007 is a deficient number, since it is larger than the sum of its proper divisors (844007713).

217828287007 is a wasteful number, since it uses less digits than its factorization.

217828287007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148113.

The product of its (nonzero) digits is 1404928, while the sum is 52.

The spelling of 217828287007 in words is "two hundred seventeen billion, eight hundred twenty-eight million, two hundred eighty-seven thousand, seven".