12780002159 has 4 divisors (see below), whose sum is σ = 12783623016. Its totient is φ = 12776381304.

The previous prime is 12780002149. The next prime is 12780002171. The reversal of 12780002159 is 95120008721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95120008721 = 137 ⋅694306633.

It is a cyclic number.

It is not a de Polignac number, because 12780002159 - 2⁴ = 12780002143 is a prime.

It is a super-2 number, since 2×12780002159² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780002149) 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, 1805129 + ... + 1812194.

It is an arithmetic number, because the mean of its divisors is an integer number (3195905754).

Almost surely, 2^12780002159 is an apocalyptic number.

12780002159 is a deficient number, since it is larger than the sum of its proper divisors (3620857).

12780002159 is an equidigital number, since it uses as much as digits as its factorization.

12780002159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620856.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 12780002159 in words is "twelve billion, seven hundred eighty million, two thousand, one hundred fifty-nine".