8218231828169 has 32 divisors (see below), whose sum is σ = 9501162644736. Its totient is φ = 7025389701120.

The previous prime is 8218231828141. The next prime is 8218231828171. The reversal of 8218231828169 is 9618281328128.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8218231828169 - 2¹⁶ = 8218231762633 is a prime.

It is a super-2 number, since 2×8218231828169² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8218231828769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1607318357 + ... + 1607323469.

It is an arithmetic number, because the mean of its divisors is an integer number (296911332648).

Almost surely, 2^{8218231828169} is an apocalyptic number.

It is an amenable number.

8218231828169 is a deficient number, since it is larger than the sum of its proper divisors (1282930816567).

8218231828169 is a wasteful number, since it uses less digits than its factorization.

8218231828169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105.

The product of its digits is 5308416, while the sum is 59.

The spelling of 8218231828169 in words is "eight trillion, two hundred eighteen billion, two hundred thirty-one million, eight hundred twenty-eight thousand, one hundred sixty-nine".