65990218162189 has 8 divisors (see below), whose sum is σ = 66530580086880. Its totient is φ = 65450793554256.

The previous prime is 65990218162181. The next prime is 65990218162217. The reversal of 65990218162189 is 98126181209956.

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 65990218162189 - 2³ = 65990218162181 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 (65990218162181) 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, 234187807 + ... + 234469420.

It is an arithmetic number, because the mean of its divisors is an integer number (8316322510860).

Almost surely, 2^{65990218162189} is an apocalyptic number.

It is an amenable number.

65990218162189 is a deficient number, since it is larger than the sum of its proper divisors (540361924691).

65990218162189 is a wasteful number, since it uses less digits than its factorization.

65990218162189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468658379.

The product of its (nonzero) digits is 33592320, while the sum is 67.

The spelling of 65990218162189 in words is "sixty-five trillion, nine hundred ninety billion, two hundred eighteen million, one hundred sixty-two thousand, one hundred eighty-nine".