1247868708768 has 144 divisors (see below), whose sum is σ = 4014608191776. Its totient is φ = 378142007040.

The previous prime is 1247868708761. The next prime is 1247868708811. The reversal of 1247868708768 is 8678078687421.

It is a happy number.

1247868708768 is a `hidden beast` number, since 1 + 2 + 478 + 6 + 8 + 70 + 87 + 6 + 8 = 666.

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 (72).

It is a junction number, because it is equal to n+sod(n) for n = 1247868708696 and 1247868708705.

It is not an unprimeable number, because it can be changed into a prime (1247868708761) 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 23 ways as a sum of consecutive naturals, for example, 7208871 + ... + 7379942.

It is an arithmetic number, because the mean of its divisors is an integer number (27879223554).

Almost surely, 2^{1247868708768} is an apocalyptic number.

1247868708768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1247868708768 is an abundant number, since it is smaller than the sum of its proper divisors (2766739483008).

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

1247868708768 is a wasteful number, since it uses less digits than its factorization.

1247868708768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588849 (or 14588829 counting only the distinct ones).

The product of its (nonzero) digits is 404619264, while the sum is 72.

The spelling of 1247868708768 in words is "one trillion, two hundred forty-seven billion, eight hundred sixty-eight million, seven hundred eight thousand, seven hundred sixty-eight".