1213543710720 has 1536 divisors, whose sum is σ = 5070181858560. Its totient is φ = 275188285440.

The previous prime is 1213543710707. The next prime is 1213543710721. The reversal of 1213543710720 is 270173453121.

1213543710720 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 543 + 7 + 107 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1536).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213543710721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7445053359 + ... + 7445053521.

Almost surely, 2^{1213543710720} is an apocalyptic number.

1213543710720 is a gapful number since it is divisible by the number (10) 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 1213543710720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2535090929280).

1213543710720 is an abundant number, since it is smaller than the sum of its proper divisors (3856638147840).

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

1213543710720 is an equidigital number, since it uses as much as digits as its factorization.

1213543710720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 1213543710720 in words is "one trillion, two hundred thirteen billion, five hundred forty-three million, seven hundred ten thousand, seven hundred twenty".