1247460245280 has 144 divisors (see below), whose sum is σ = 4337278316280. Its totient is φ = 326379515904.

The previous prime is 1247460245219. The next prime is 1247460245389. The reversal of 1247460245280 is 825420647421.

1247460245280 is a `hidden beast` number, since 1 + 2 + 4 + 74 + 60 + 245 + 280 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 752750582544 + 494709662736 = 867612^2 + 703356^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

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 23 ways as a sum of consecutive naturals, for example, 8096245 + ... + 8248884.

Almost surely, 2^{1247460245280} is an apocalyptic number.

1247460245280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247460245280 is an abundant number, since it is smaller than the sum of its proper divisors (3089818071000).

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

1247460245280 is a wasteful number, since it uses less digits than its factorization.

1247460245280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16345203 (or 16345192 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 1247460245280 in words is "one trillion, two hundred forty-seven billion, four hundred sixty million, two hundred forty-five thousand, two hundred eighty".