144081672021 has 32 divisors (see below), whose sum is σ = 243968537600. Its totient is φ = 82325386800.

The previous prime is 144081672011. The next prime is 144081672061. The reversal of 144081672021 is 120276180441.

It is a happy number.

144081672021 is a `hidden beast` number, since 1 + 440 + 8 + 1 + 6 + 7 + 202 + 1 = 666.

It is not a de Polignac number, because 144081672021 - 2⁷ = 144081671893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144081672011) 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 31 ways as a sum of consecutive naturals, for example, 2895570 + ... + 2944908.

It is an arithmetic number, because the mean of its divisors is an integer number (7624016800).

Almost surely, 2^144081672021 is an apocalyptic number.

It is an amenable number.

144081672021 is a deficient number, since it is larger than the sum of its proper divisors (99886865579).

144081672021 is a wasteful number, since it uses less digits than its factorization.

144081672021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64806 (or 64800 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 144081672021 in words is "one hundred forty-four billion, eighty-one million, six hundred seventy-two thousand, twenty-one".