215403051133 has 4 divisors (see below), whose sum is σ = 215448682428. Its totient is φ = 215357419840.

The previous prime is 215403051131. The next prime is 215403051163. The reversal of 215403051133 is 331150304512.

It is a happy number.

215403051133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 144462326724 + 70940724409 = 380082^2 + 266347^2 .

It is a cyclic number.

It is not a de Polignac number, because 215403051133 - 2¹ = 215403051131 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 (215403051131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22808566 + ... + 22818007.

It is an arithmetic number, because the mean of its divisors is an integer number (53862170607).

Almost surely, 2^215403051133 is an apocalyptic number.

It is an amenable number.

215403051133 is a deficient number, since it is larger than the sum of its proper divisors (45631295).

215403051133 is an equidigital number, since it uses as much as digits as its factorization.

215403051133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45631294.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 215403051133 its reverse (331150304512), we get a palindrome (546553355645).

The spelling of 215403051133 in words is "two hundred fifteen billion, four hundred three million, fifty-one thousand, one hundred thirty-three".