1245504798720 has 2448 divisors, whose sum is σ = 5906310916320. Its totient is φ = 247329718272.

The previous prime is 1245504798667. The next prime is 1245504798721. The reversal of 1245504798720 is 278974055421.

1245504798720 is a `hidden beast` number, since 1 + 2 + 4 + 550 + 4 + 7 + 9 + 87 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2448).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245504798721) 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 143 ways as a sum of consecutive naturals, for example, 73264988152 + ... + 73264988168.

Almost surely, 2^{1245504798720} is an apocalyptic number.

1245504798720 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 1245504798720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2953155458160).

1245504798720 is an abundant number, since it is smaller than the sum of its proper divisors (4660806117600).

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

1245504798720 is an equidigital number, since it uses as much as digits as its factorization.

1245504798720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 1245504798720 in words is "one trillion, two hundred forty-five billion, five hundred four million, seven hundred ninety-eight thousand, seven hundred twenty".