218517010190 has 8 divisors (see below), whose sum is σ = 393330618360. Its totient is φ = 87406804072.

The previous prime is 218517010189. The next prime is 218517010207. The reversal of 218517010190 is 91010715812.

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

It is a super-2 number, since 2×218517010190² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218517010190.

It is a congruent number.

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, 10925850500 + ... + 10925850519.

It is an arithmetic number, because the mean of its divisors is an integer number (49166327295).

Almost surely, 2^218517010190 is an apocalyptic number.

218517010190 is a deficient number, since it is larger than the sum of its proper divisors (174813608170).

218517010190 is a wasteful number, since it uses less digits than its factorization.

218517010190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21851701026.

The product of its (nonzero) digits is 5040, while the sum is 35.

The spelling of 218517010190 in words is "two hundred eighteen billion, five hundred seventeen million, ten thousand, one hundred ninety".