1245347550720 has 1120 divisors, whose sum is σ = 5510689918272. Its totient is φ = 262718816256.

The previous prime is 1245347550691. The next prime is 1245347550737. The reversal of 1245347550720 is 270557435421.

1245347550720 is a `hidden beast` number, since 1 + 2 + 4 + 53 + 4 + 75 + 507 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1120).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 169824174 + ... + 169831506.

Almost surely, 2^{1245347550720} is an apocalyptic number.

1245347550720 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 1245347550720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2755344959136).

1245347550720 is an abundant number, since it is smaller than the sum of its proper divisors (4265342367552).

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

1245347550720 is an frugal number, since it uses more digits than its factorization.

1245347550720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7394 (or 7363 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 45.

The spelling of 1245347550720 in words is "one trillion, two hundred forty-five billion, three hundred forty-seven million, five hundred fifty thousand, seven hundred twenty".