215044541011 has 16 divisors (see below), whose sum is σ = 231589087200. Its totient is φ = 198933815808.

The previous prime is 215044540979. The next prime is 215044541057. The reversal of 215044541011 is 110145440512.

It is a cyclic number.

It is not a de Polignac number, because 215044541011 - 2⁵ = 215044540979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215044541311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8907625 + ... + 8931733.

It is an arithmetic number, because the mean of its divisors is an integer number (14474317950).

Almost surely, 2^215044541011 is an apocalyptic number.

215044541011 is a deficient number, since it is larger than the sum of its proper divisors (16544546189).

215044541011 is a wasteful number, since it uses less digits than its factorization.

215044541011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33078.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 215044541011 its reverse (110145440512), we get a palindrome (325189981523).

The spelling of 215044541011 in words is "two hundred fifteen billion, forty-four million, five hundred forty-one thousand, eleven".