1144640215346 has 16 divisors (see below), whose sum is σ = 1724660512344. Its totient is φ = 569756012544.

The previous prime is 1144640215259. The next prime is 1144640215351. The reversal of 1144640215346 is 6435120464411.

It can be written as a sum of positive squares in 4 ways, for example, as 1129733026321 + 14907189025 = 1062889^2 + 122095^2 .

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 7 ways as a sum of consecutive naturals, for example, 212516 + ... + 1527888.

Almost surely, 2^{1144640215346} is an apocalyptic number.

1144640215346 is a deficient number, since it is larger than the sum of its proper divisors (580020296998).

1144640215346 is a wasteful number, since it uses less digits than its factorization.

1144640215346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317325.

The product of its (nonzero) digits is 276480, while the sum is 41.

Adding to 1144640215346 its reverse (6435120464411), we get a palindrome (7579760679757).

The spelling of 1144640215346 in words is "one trillion, one hundred forty-four billion, six hundred forty million, two hundred fifteen thousand, three hundred forty-six".