12739495109 has 4 divisors (see below), whose sum is σ = 13897631040. Its totient is φ = 11581359180.

The previous prime is 12739495103. The next prime is 12739495121. The reversal of 12739495109 is 90159493721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90159493721 = 11 ⋅8196317611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12739495109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739495103) 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, 579067949 + ... + 579067970.

It is an arithmetic number, because the mean of its divisors is an integer number (3474407760).

Almost surely, 2^12739495109 is an apocalyptic number.

It is an amenable number.

12739495109 is a deficient number, since it is larger than the sum of its proper divisors (1158135931).

12739495109 is a wasteful number, since it uses less digits than its factorization.

12739495109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158135930.

The product of its (nonzero) digits is 612360, while the sum is 50.

The spelling of 12739495109 in words is "twelve billion, seven hundred thirty-nine million, four hundred ninety-five thousand, one hundred nine".