217913900002 has 8 divisors (see below), whose sum is σ = 346098547116. Its totient is φ = 102547717632.

The previous prime is 217913899991. The next prime is 217913900041. The reversal of 217913900002 is 200009319712.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 217791155761 + 122744241 = 466681^2 + 11079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 6409232353 = 217913900002 / (2 + 1 + 7 + 9 + 1 + 3 + 9 + 0 + 0 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3204616143 + ... + 3204616210.

Almost surely, 2^217913900002 is an apocalyptic number.

217913900002 is a deficient number, since it is larger than the sum of its proper divisors (128184647114).

217913900002 is a wasteful number, since it uses less digits than its factorization.

217913900002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409232372.

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 217913900002 in words is "two hundred seventeen billion, nine hundred thirteen million, nine hundred thousand, two".