1224962249856 has 128 divisors (see below), whose sum is σ = 3299488819200. Its totient is φ = 402602124288.

The previous prime is 1224962249843. The next prime is 1224962249879. The reversal of 1224962249856 is 6589422694221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1224962249856.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22512475 + ... + 22566821.

It is an arithmetic number, because the mean of its divisors is an integer number (25777256400).

Almost surely, 2^{1224962249856} is an apocalyptic number.

1224962249856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224962249856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649744409600).

1224962249856 is an abundant number, since it is smaller than the sum of its proper divisors (2074526569344).

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

1224962249856 is an equidigital number, since it uses as much as digits as its factorization.

1224962249856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55186 (or 55174 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 60.

The spelling of 1224962249856 in words is "one trillion, two hundred twenty-four billion, nine hundred sixty-two million, two hundred forty-nine thousand, eight hundred fifty-six".