1243642413315 has 16 divisors (see below), whose sum is σ = 1993149792000. Its totient is φ = 662168643552.

The previous prime is 1243642413311. The next prime is 1243642413317. The reversal of 1243642413315 is 5133142463421.

It is not a de Polignac number, because 1243642413315 - 2² = 1243642413311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243642413311) 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 15 ways as a sum of consecutive naturals, for example, 69197605 + ... + 69215574.

It is an arithmetic number, because the mean of its divisors is an integer number (124571862000).

Almost surely, 2^{1243642413315} is an apocalyptic number.

1243642413315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1243642413315 is a deficient number, since it is larger than the sum of its proper divisors (749507378685).

1243642413315 is a wasteful number, since it uses less digits than its factorization.

1243642413315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138413786.

The product of its digits is 207360, while the sum is 39.

Adding to 1243642413315 its reverse (5133142463421), we get a palindrome (6376784876736).

The spelling of 1243642413315 in words is "one trillion, two hundred forty-three billion, six hundred forty-two million, four hundred thirteen thousand, three hundred fifteen".