12356885672780 has 48 divisors (see below), whose sum is σ = 28308740695200. Its totient is φ = 4493375040000.

The previous prime is 12356885672777. The next prime is 12356885672783. The reversal of 12356885672780 is 8727658865321.

It is an interprime number because it is at equal distance from previous prime (12356885672777) and next prime (12356885672783).

It is a self number, because there is not a number n which added to its sum of digits gives 12356885672780.

It is not an unprimeable number, because it can be changed into a prime (12356885672783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50698646 + ... + 50941794.

It is an arithmetic number, because the mean of its divisors is an integer number (589765431150).

Almost surely, 2^{12356885672780} is an apocalyptic number.

12356885672780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12356885672780 is an abundant number, since it is smaller than the sum of its proper divisors (15951855022420).

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

12356885672780 is a wasteful number, since it uses less digits than its factorization.

12356885672780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474170 (or 474168 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 68.

The spelling of 12356885672780 in words is "twelve trillion, three hundred fifty-six billion, eight hundred eighty-five million, six hundred seventy-two thousand, seven hundred eighty".