12015270539 has 4 divisors (see below), whose sum is σ = 12308325960. Its totient is φ = 11722215120.

The previous prime is 12015270529. The next prime is 12015270581. The reversal of 12015270539 is 93507251021.

12015270539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93507251021 = 223 ⋅419315027.

It is a cyclic number.

It is not a de Polignac number, because 12015270539 - 2⁸ = 12015270283 is a prime.

It is a super-2 number, since 2×12015270539² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12015270499 and 12015270508.

It is not an unprimeable number, because it can be changed into a prime (12015270529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146527649 + ... + 146527730.

It is an arithmetic number, because the mean of its divisors is an integer number (3077081490).

Almost surely, 2^12015270539 is an apocalyptic number.

12015270539 is a deficient number, since it is larger than the sum of its proper divisors (293055421).

12015270539 is an equidigital number, since it uses as much as digits as its factorization.

12015270539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293055420.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 12015270539 in words is "twelve billion, fifteen million, two hundred seventy thousand, five hundred thirty-nine".