12149013637 has 4 divisors (see below), whose sum is σ = 12863661516. Its totient is φ = 11434365760.

The previous prime is 12149013607. The next prime is 12149013659. The reversal of 12149013637 is 73631094121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73631094121 = 13 ⋅5663930317.

It can be written as a sum of positive squares in 2 ways, for example, as 4472800641 + 7676212996 = 66879^2 + 87614^2 .

It is a cyclic number.

It is not a de Polignac number, because 12149013637 - 2⁷ = 12149013509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12149013596 and 12149013605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149013607) 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, 357323914 + ... + 357323947.

It is an arithmetic number, because the mean of its divisors is an integer number (3215915379).

Almost surely, 2^12149013637 is an apocalyptic number.

12149013637 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12149013637 is a deficient number, since it is larger than the sum of its proper divisors (714647879).

12149013637 is an equidigital number, since it uses as much as digits as its factorization.

12149013637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714647878.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 12149013637 in words is "twelve billion, one hundred forty-nine million, thirteen thousand, six hundred thirty-seven".