215040630235 has 4 divisors (see below), whose sum is σ = 258048756288. Its totient is φ = 172032504184.

The previous prime is 215040630197. The next prime is 215040630239. The reversal of 215040630235 is 532036040512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 215040630235 - 2⁷ = 215040630107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215040630197 and 215040630206.

It is not an unprimeable number, because it can be changed into a prime (215040630239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21504063019 + ... + 21504063028.

It is an arithmetic number, because the mean of its divisors is an integer number (64512189072).

Almost surely, 2^215040630235 is an apocalyptic number.

215040630235 is a deficient number, since it is larger than the sum of its proper divisors (43008126053).

215040630235 is an equidigital number, since it uses as much as digits as its factorization.

215040630235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43008126052.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 215040630235 its reverse (532036040512), we get a palindrome (747076670747).

The spelling of 215040630235 in words is "two hundred fifteen billion, forty million, six hundred thirty thousand, two hundred thirty-five".