1444154923289 has 4 divisors (see below), whose sum is σ = 1555243763556. Its totient is φ = 1333066083024.

The previous prime is 1444154923273. The next prime is 1444154923301. The reversal of 1444154923289 is 9823294514441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 429461340889 + 1014693582400 = 655333^2 + 1007320^2 .

It is not a de Polignac number, because 1444154923289 - 2⁴ = 1444154923273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444154926289) 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, 55544420114 + ... + 55544420139.

It is an arithmetic number, because the mean of its divisors is an integer number (388810940889).

Almost surely, 2^{1444154923289} is an apocalyptic number.

It is an amenable number.

1444154923289 is a deficient number, since it is larger than the sum of its proper divisors (111088840267).

1444154923289 is a wasteful number, since it uses less digits than its factorization.

1444154923289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111088840266.

The product of its digits is 9953280, while the sum is 56.

The spelling of 1444154923289 in words is "one trillion, four hundred forty-four billion, one hundred fifty-four million, nine hundred twenty-three thousand, two hundred eighty-nine".