2544243056640 has 448 divisors, whose sum is σ = 9126143596800. Its totient is φ = 672427671552.

The previous prime is 2544243056633. The next prime is 2544243056651. The reversal of 2544243056640 is 466503424452.

It is a happy number.

2544243056640 is a `hidden beast` number, since 2 + 5 + 4 + 4 + 2 + 43 + 0 + 566 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124958781 + ... + 124979139.

Almost surely, 2^{2544243056640} is an apocalyptic number.

2544243056640 is a gapful number since it is divisible by the number (20) 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 2544243056640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4563071798400).

2544243056640 is an abundant number, since it is smaller than the sum of its proper divisors (6581900540160).

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

2544243056640 is a wasteful number, since it uses less digits than its factorization.

2544243056640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20512 (or 20482 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 45.

The spelling of 2544243056640 in words is "two trillion, five hundred forty-four billion, two hundred forty-three million, fifty-six thousand, six hundred forty".