12159505646 has 12 divisors (see below), whose sum is σ = 19375268568. Its totient is φ = 5722120032.

The previous prime is 12159505597. The next prime is 12159505649. The reversal of 12159505646 is 64650595121.

It is a junction number, because it is equal to n+sod(n) for n = 12159505597 and 12159505606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12159505649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10518026 + ... + 10519181.

It is an arithmetic number, because the mean of its divisors is an integer number (1614605714).

Almost surely, 2^12159505646 is an apocalyptic number.

12159505646 is a deficient number, since it is larger than the sum of its proper divisors (7215762922).

12159505646 is a wasteful number, since it uses less digits than its factorization.

12159505646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21037243 (or 21037226 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 12159505646 in words is "twelve billion, one hundred fifty-nine million, five hundred five thousand, six hundred forty-six".