144366636421 has 8 divisors (see below), whose sum is σ = 165062792384. Its totient is φ = 123688568160.

The previous prime is 144366636413. The next prime is 144366636451. The reversal of 144366636421 is 124636663441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144366636421 - 2³ = 144366636413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144366636451) 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 7 ways as a sum of consecutive naturals, for example, 4504815 + ... + 4536748.

It is an arithmetic number, because the mean of its divisors is an integer number (20632849048).

Almost surely, 2^144366636421 is an apocalyptic number.

It is an amenable number.

144366636421 is a deficient number, since it is larger than the sum of its proper divisors (20696155963).

144366636421 is an equidigital number, since it uses as much as digits as its factorization.

144366636421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9043851.

The product of its digits is 1492992, while the sum is 46.

The spelling of 144366636421 in words is "one hundred forty-four billion, three hundred sixty-six million, six hundred thirty-six thousand, four hundred twenty-one".