12576148537 has 4 divisors (see below), whose sum is σ = 12620903796. Its totient is φ = 12531393280.

The previous prime is 12576148517. The next prime is 12576148547. The reversal of 12576148537 is 73584167521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73584167521 = 197 ⋅373523693.

It can be written as a sum of positive squares in 2 ways, for example, as 7106658601 + 5469489936 = 84301^2 + 73956^2 .

It is a cyclic number.

It is not a de Polignac number, because 12576148537 - 2¹⁹ = 12575624249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12576148517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22377208 + ... + 22377769.

It is an arithmetic number, because the mean of its divisors is an integer number (3155225949).

Almost surely, 2^12576148537 is an apocalyptic number.

It is an amenable number.

12576148537 is a deficient number, since it is larger than the sum of its proper divisors (44755259).

12576148537 is an equidigital number, since it uses as much as digits as its factorization.

12576148537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44755258.

The product of its digits is 1411200, while the sum is 49.

The spelling of 12576148537 in words is "twelve billion, five hundred seventy-six million, one hundred forty-eight thousand, five hundred thirty-seven".