12259673556 has 96 divisors (see below), whose sum is σ = 33743485440. Its totient is φ = 3427866624.

The previous prime is 12259673551. The next prime is 12259673579. The reversal of 12259673556 is 65537695221.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 12259673499 and 12259673508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12259673551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2796 + ... + 156611.

It is an arithmetic number, because the mean of its divisors is an integer number (351494640).

Almost surely, 2^12259673556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12259673556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16871742720).

12259673556 is an abundant number, since it is smaller than the sum of its proper divisors (21483811884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12259673556 is a wasteful number, since it uses less digits than its factorization.

12259673556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159473 (or 159471 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 51.

The spelling of 12259673556 in words is "twelve billion, two hundred fifty-nine million, six hundred seventy-three thousand, five hundred fifty-six".