15216234135 has 16 divisors (see below), whose sum is σ = 24349212384. Its totient is φ = 8114245632.

The previous prime is 15216234133. The next prime is 15216234167. The reversal of 15216234135 is 53143261251.

It is not a de Polignac number, because 15216234135 - 2¹ = 15216234133 is a prime.

It is a super-2 number, since 2×15216234135² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15216234096 and 15216234105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15216234133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56439 + ... + 183351.

It is an arithmetic number, because the mean of its divisors is an integer number (1521825774).

Almost surely, 2^15216234135 is an apocalyptic number.

15216234135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15216234135 is a deficient number, since it is larger than the sum of its proper divisors (9132978249).

15216234135 is a wasteful number, since it uses less digits than its factorization.

15216234135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134914.

The product of its digits is 21600, while the sum is 33.

Adding to 15216234135 its reverse (53143261251), we get a palindrome (68359495386).

The spelling of 15216234135 in words is "fifteen billion, two hundred sixteen million, two hundred thirty-four thousand, one hundred thirty-five".