144894438499 has 4 divisors (see below), whose sum is σ = 145004125240. Its totient is φ = 144784751760.

The previous prime is 144894438487. The next prime is 144894438503. The reversal of 144894438499 is 994834498441.

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

It is a cyclic number.

It is not a de Polignac number, because 144894438499 - 2³¹ = 142746954851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144894418499) 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, 54841389 + ... + 54844030.

It is an arithmetic number, because the mean of its divisors is an integer number (36251031310).

Almost surely, 2^144894438499 is an apocalyptic number.

144894438499 is a deficient number, since it is larger than the sum of its proper divisors (109686741).

144894438499 is a wasteful number, since it uses less digits than its factorization.

144894438499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109686740.

The product of its digits is 143327232, while the sum is 67.

The spelling of 144894438499 in words is "one hundred forty-four billion, eight hundred ninety-four million, four hundred thirty-eight thousand, four hundred ninety-nine".