144506642551021 has 16 divisors (see below), whose sum is σ = 146861358509376. Its totient is φ = 142157781063936.

The previous prime is 144506642550971. The next prime is 144506642551043. The reversal of 144506642551021 is 120155246605441.

It is a cyclic number.

It is not a de Polignac number, because 144506642551021 - 2⁹ = 144506642550509 is a prime.

It is a super-3 number, since 3×144506642551021³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144506642551121) 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 15 ways as a sum of consecutive naturals, for example, 590310370 + ... + 590555116.

It is an arithmetic number, because the mean of its divisors is an integer number (9178834906836).

Almost surely, 2^{144506642551021} is an apocalyptic number.

It is an amenable number.

144506642551021 is a deficient number, since it is larger than the sum of its proper divisors (2354715958355).

144506642551021 is a wasteful number, since it uses less digits than its factorization.

144506642551021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256668.

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 144506642551021 in words is "one hundred forty-four trillion, five hundred six billion, six hundred forty-two million, five hundred fifty-one thousand, twenty-one".