15012120135 has 16 divisors (see below), whose sum is σ = 24847647840. Its totient is φ = 7730378880.

The previous prime is 15012120133. The next prime is 15012120143. The reversal of 15012120135 is 53102121051.

It is not a de Polignac number, because 15012120135 - 2¹ = 15012120133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15012120133) 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, 17254876 + ... + 17255745.

It is an arithmetic number, because the mean of its divisors is an integer number (1552977990).

Almost surely, 2^15012120135 is an apocalyptic number.

15012120135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15012120135 is a deficient number, since it is larger than the sum of its proper divisors (9835527705).

15012120135 is a wasteful number, since it uses less digits than its factorization.

15012120135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34510658.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 15012120135 its reverse (53102121051), we get a palindrome (68114241186).

The spelling of 15012120135 in words is "fifteen billion, twelve million, one hundred twenty thousand, one hundred thirty-five".