818216258963 has 4 divisors (see below), whose sum is σ = 818219461080. Its totient is φ = 818213056848.

The previous prime is 818216258927. The next prime is 818216259079. The reversal of 818216258963 is 369852612818.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 818216258963 - 2²⁰ = 818215210387 is a prime.

It is a super-3 number, since 3×818216258963³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818216558963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181045 + ... + 1741062.

It is an arithmetic number, because the mean of its divisors is an integer number (204554865270).

Almost surely, 2^818216258963 is an apocalyptic number.

818216258963 is a deficient number, since it is larger than the sum of its proper divisors (3202117).

818216258963 is a wasteful number, since it uses less digits than its factorization.

818216258963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202116.

The product of its digits is 9953280, while the sum is 59.

The spelling of 818216258963 in words is "eight hundred eighteen billion, two hundred sixteen million, two hundred fifty-eight thousand, nine hundred sixty-three".