135515030251 has 8 divisors (see below), whose sum is σ = 141906666240. Its totient is φ = 129165034152.

The previous prime is 135515030207. The next prime is 135515030309. The reversal of 135515030251 is 152030515531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135515030251 - 2²⁹ = 134978159339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135515030201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10403311 + ... + 10416328.

It is an arithmetic number, because the mean of its divisors is an integer number (17738333280).

Almost surely, 2^135515030251 is an apocalyptic number.

135515030251 is a deficient number, since it is larger than the sum of its proper divisors (6391635989).

135515030251 is a wasteful number, since it uses less digits than its factorization.

135515030251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20819945.

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 135515030251 its reverse (152030515531), we get a palindrome (287545545782).

The spelling of 135515030251 in words is "one hundred thirty-five billion, five hundred fifteen million, thirty thousand, two hundred fifty-one".