144642622461 has 8 divisors (see below), whose sum is σ = 192864902880. Its totient is φ = 96424378512.

The previous prime is 144642622441. The next prime is 144642622463. The reversal of 144642622461 is 164226246441.

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

It is not a de Polignac number, because 144642622461 - 2¹⁰ = 144642621437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144642622463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924490 + ... + 1069563.

It is an arithmetic number, because the mean of its divisors is an integer number (24108112860).

Almost surely, 2^144642622461 is an apocalyptic number.

It is an amenable number.

144642622461 is a deficient number, since it is larger than the sum of its proper divisors (48222280419).

144642622461 is a wasteful number, since it uses less digits than its factorization.

144642622461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018235.

The product of its digits is 442368, while the sum is 42.

The spelling of 144642622461 in words is "one hundred forty-four billion, six hundred forty-two million, six hundred twenty-two thousand, four hundred sixty-one".