144135844820638 has 8 divisors (see below), whose sum is σ = 235858655161080. Its totient is φ = 65516293100280.

The previous prime is 144135844820633. The next prime is 144135844820777. The reversal of 144135844820638 is 836028448531441.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144135844820633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275814654993 + ... + 3275814655036.

It is an arithmetic number, because the mean of its divisors is an integer number (29482331895135).

Almost surely, 2^{144135844820638} is an apocalyptic number.

144135844820638 is a deficient number, since it is larger than the sum of its proper divisors (91722810340442).

144135844820638 is a wasteful number, since it uses less digits than its factorization.

144135844820638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6551629310042.

The product of its (nonzero) digits is 70778880, while the sum is 61.

The spelling of 144135844820638 in words is "one hundred forty-four trillion, one hundred thirty-five billion, eight hundred forty-four million, eight hundred twenty thousand, six hundred thirty-eight".