15020204135 has 4 divisors (see below), whose sum is σ = 18024244968. Its totient is φ = 12016163304.

The previous prime is 15020204113. The next prime is 15020204149. The reversal of 15020204135 is 53140202051.

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 15020204135 - 2¹⁸ = 15019941991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15020204135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502020409 + ... + 1502020418.

It is an arithmetic number, because the mean of its divisors is an integer number (4506061242).

Almost surely, 2^15020204135 is an apocalyptic number.

15020204135 is a deficient number, since it is larger than the sum of its proper divisors (3004040833).

15020204135 is an equidigital number, since it uses as much as digits as its factorization.

15020204135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004040832.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 15020204135 its reverse (53140202051), we get a palindrome (68160406186).

The spelling of 15020204135 in words is "fifteen billion, twenty million, two hundred four thousand, one hundred thirty-five".