144521643747 has 16 divisors (see below), whose sum is σ = 207535039488. Its totient is φ = 88929204000.

The previous prime is 144521643731. The next prime is 144521643793. The reversal of 144521643747 is 747346125441.

It is not a de Polignac number, because 144521643747 - 2⁴ = 144521643731 is a prime.

It is a super-2 number, since 2×144521643747² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144521643696 and 144521643705.

It is not an unprimeable number, because it can be changed into a prime (144521643797) 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, 360622 + ... + 647372.

It is an arithmetic number, because the mean of its divisors is an integer number (12970939968).

Almost surely, 2^144521643747 is an apocalyptic number.

144521643747 is a deficient number, since it is larger than the sum of its proper divisors (63013395741).

144521643747 is a wasteful number, since it uses less digits than its factorization.

144521643747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299690.

The product of its digits is 2257920, while the sum is 48.

The spelling of 144521643747 in words is "one hundred forty-four billion, five hundred twenty-one million, six hundred forty-three thousand, seven hundred forty-seven".