144887456897 has 4 divisors (see below), whose sum is σ = 146928125376. Its totient is φ = 142846788420.

The previous prime is 144887456869. The next prime is 144887456921. The reversal of 144887456897 is 798654788441.

144887456897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144887456897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (71), and also a Moran number because the ratio is a prime number: 2040668407 = 144887456897 / (1 + 4 + 4 + 8 + 8 + 7 + 4 + 5 + 6 + 8 + 9 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144887456897.

It is not an unprimeable number, because it can be changed into a prime (144887456827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020334133 + ... + 1020334274.

It is an arithmetic number, because the mean of its divisors is an integer number (36732031344).

Almost surely, 2^144887456897 is an apocalyptic number.

It is an amenable number.

144887456897 is a deficient number, since it is larger than the sum of its proper divisors (2040668479).

144887456897 is an equidigital number, since it uses as much as digits as its factorization.

144887456897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040668478.

The product of its digits is 433520640, while the sum is 71.

The spelling of 144887456897 in words is "one hundred forty-four billion, eight hundred eighty-seven million, four hundred fifty-six thousand, eight hundred ninety-seven".