144640644413 has 2 divisors, whose sum is σ = 144640644414. Its totient is φ = 144640644412.

The previous prime is 144640644373. The next prime is 144640644419. The reversal of 144640644413 is 314446046441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138474782884 + 6165861529 = 372122^2 + 78523^2 .

It is a cyclic number.

It is not a de Polignac number, because 144640644413 - 2¹⁸ = 144640382269 is a prime.

It is a super-2 number, since 2×144640644413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144640644419) 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 as a sum of consecutive naturals, namely, 72320322206 + 72320322207.

It is an arithmetic number, because the mean of its divisors is an integer number (72320322207).

Almost surely, 2^144640644413 is an apocalyptic number.

It is an amenable number.

144640644413 is a deficient number, since it is larger than the sum of its proper divisors (1).

144640644413 is an equidigital number, since it uses as much as digits as its factorization.

144640644413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 144640644413 in words is "one hundred forty-four billion, six hundred forty million, six hundred forty-four thousand, four hundred thirteen".