2158533323316 has 72 divisors (see below), whose sum is σ = 5604112328360. Its totient is φ = 700020838656.

The previous prime is 2158533323281. The next prime is 2158533323329. The reversal of 2158533323316 is 6133233358512.

2158533323316 is a `hidden beast` number, since 2 + 1 + 5 + 8 + 5 + 3 + 3 + 323 + 316 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 182833208100 + 1975700115216 = 427590^2 + 1405596^2 .

It is a super-2 number, since 2×2158533323316² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26221950 + ... + 26304138.

Almost surely, 2^{2158533323316} is an apocalyptic number.

It is an amenable number.

2158533323316 is an abundant number, since it is smaller than the sum of its proper divisors (3445579005044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2158533323316 is a wasteful number, since it uses less digits than its factorization.

2158533323316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101953 (or 101948 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The spelling of 2158533323316 in words is "two trillion, one hundred fifty-eight billion, five hundred thirty-three million, three hundred twenty-three thousand, three hundred sixteen".