144404773738 has 4 divisors (see below), whose sum is σ = 216607160610. Its totient is φ = 72202386868.

The previous prime is 144404773661. The next prime is 144404773739. The reversal of 144404773738 is 837377404441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837377404441 = 13597 ⋅61585453.

It can be written as a sum of positive squares in only one way, i.e., 131201155089 + 13203618649 = 362217^2 + 114907^2 .

It is not an unprimeable number, because it can be changed into a prime (144404773739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101193433 + ... + 36101193436.

Almost surely, 2^144404773738 is an apocalyptic number.

144404773738 is a deficient number, since it is larger than the sum of its proper divisors (72202386872).

144404773738 is an equidigital number, since it uses as much as digits as its factorization.

144404773738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72202386871.

The product of its (nonzero) digits is 6322176, while the sum is 52.

The spelling of 144404773738 in words is "one hundred forty-four billion, four hundred four million, seven hundred seventy-three thousand, seven hundred thirty-eight".