1224245479520 has 96 divisors (see below), whose sum is σ = 3375791935488. Its totient is φ = 410810623488.

The previous prime is 1224245479493. The next prime is 1224245479529. The reversal of 1224245479520 is 259745424221.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224245479529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11575832 + ... + 11681111.

It is an arithmetic number, because the mean of its divisors is an integer number (35164499328).

Almost surely, 2^{1224245479520} is an apocalyptic number.

1224245479520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224245479520 is an abundant number, since it is smaller than the sum of its proper divisors (2151546455968).

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

1224245479520 is a wasteful number, since it uses less digits than its factorization.

1224245479520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23257012 (or 23257004 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 47.

The spelling of 1224245479520 in words is "one trillion, two hundred twenty-four billion, two hundred forty-five million, four hundred seventy-nine thousand, five hundred twenty".