144444033691 has 4 divisors (see below), whose sum is σ = 144555060384. Its totient is φ = 144333007000.

The previous prime is 144444033649. The next prime is 144444033803. The reversal of 144444033691 is 196330444441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196330444441 = 17 ⋅11548849673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144444033691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144444033491) 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, 55511395 + ... + 55513996.

It is an arithmetic number, because the mean of its divisors is an integer number (36138765096).

Almost surely, 2^144444033691 is an apocalyptic number.

144444033691 is a deficient number, since it is larger than the sum of its proper divisors (111026693).

144444033691 is a wasteful number, since it uses less digits than its factorization.

144444033691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111026692.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 144444033691 in words is "one hundred forty-four billion, four hundred forty-four million, thirty-three thousand, six hundred ninety-one".