215585202145 has 16 divisors (see below), whose sum is σ = 268273774080. Its totient is φ = 166177652544.

The previous prime is 215585202137. The next prime is 215585202149. The reversal of 215585202145 is 541202585512.

215585202145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 215585202145 - 2³ = 215585202137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215585202098 and 215585202107.

It is not an unprimeable number, because it can be changed into a prime (215585202149) 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 15 ways as a sum of consecutive naturals, for example, 5637865 + ... + 5675974.

It is an arithmetic number, because the mean of its divisors is an integer number (16767110880).

Almost surely, 2^215585202145 is an apocalyptic number.

It is an amenable number.

215585202145 is a deficient number, since it is larger than the sum of its proper divisors (52688571935).

215585202145 is a wasteful number, since it uses less digits than its factorization.

215585202145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11313984.

The product of its (nonzero) digits is 160000, while the sum is 40.

Adding to 215585202145 its reverse (541202585512), we get a palindrome (756787787657).

The spelling of 215585202145 in words is "two hundred fifteen billion, five hundred eighty-five million, two hundred two thousand, one hundred forty-five".