215000043354164 has 24 divisors (see below), whose sum is σ = 383351330827080. Its totient is φ = 105471114937344.

The previous prime is 215000043354143. The next prime is 215000043354281. The reversal of 215000043354164 is 461453340000512.

It can be written as a sum of positive squares in 4 ways, for example, as 15611523104164 + 199388520250000 = 3951142^2 + 14120500^2 .

It is a super-2 number, since 2×215000043354164² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35359532 + ... + 40991420.

It is an arithmetic number, because the mean of its divisors is an integer number (15972972117795).

Almost surely, 2^{215000043354164} is an apocalyptic number.

It is an amenable number.

215000043354164 is a deficient number, since it is larger than the sum of its proper divisors (168351287472916).

215000043354164 is a wasteful number, since it uses less digits than its factorization.

215000043354164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5812019 (or 5812017 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 215000043354164 its reverse (461453340000512), we get a palindrome (676453383354676).

The spelling of 215000043354164 in words is "two hundred fifteen trillion, forty-three million, three hundred fifty-four thousand, one hundred sixty-four".