1243416787396 has 81 divisors (see below), whose sum is σ = 2646844563951. Its totient is φ = 509576460624.

The previous prime is 1243416787391. The next prime is 1243416787433. The reversal of 1243416787396 is 6937876143421.

The square root of 1243416787396 is 1115086.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (1243416787391) 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 26 ways as a sum of consecutive naturals, for example, 359055961 + ... + 359059423.

Almost surely, 2^{1243416787396} is an apocalyptic number.

1243416787396 is the 1115086-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243416787396

1243416787396 is an abundant number, since it is smaller than the sum of its proper divisors (1403427776555).

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

1243416787396 is an frugal number, since it uses more digits than its factorization.

1243416787396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990 (or 3495 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 61.

The spelling of 1243416787396 in words is "one trillion, two hundred forty-three billion, four hundred sixteen million, seven hundred eighty-seven thousand, three hundred ninety-six".