1268205246720 has 216 divisors, whose sum is σ = 4397394593592. Its totient is φ = 337453056000.

The previous prime is 1268205246701. The next prime is 1268205246733. The reversal of 1268205246720 is 276425028621.

1268205246720 is a `hidden beast` number, since 1 + 2 + 68 + 2 + 0 + 524 + 67 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27137949696 + 1241067297024 = 164736^2 + 1114032^2 .

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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5191320 + ... + 5430120.

Almost surely, 2^{1268205246720} is an apocalyptic number.

1268205246720 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 1268205246720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2198697296796).

1268205246720 is an abundant number, since it is smaller than the sum of its proper divisors (3129189346872).

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

1268205246720 is a wasteful number, since it uses less digits than its factorization.

1268205246720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239289 (or 239272 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 1268205246720 in words is "one trillion, two hundred sixty-eight billion, two hundred five million, two hundred forty-six thousand, seven hundred twenty".