144920040641 has 4 divisors (see below), whose sum is σ = 153444748932. Its totient is φ = 136395332352.

The previous prime is 144920040637. The next prime is 144920040653. The reversal of 144920040641 is 146040029441.

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 85188680641 + 59731360000 = 291871^2 + 244400^2 .

It is a cyclic number.

It is not a de Polignac number, because 144920040641 - 2² = 144920040637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144920040611) 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, 4262354120 + ... + 4262354153.

It is an arithmetic number, because the mean of its divisors is an integer number (38361187233).

Almost surely, 2^144920040641 is an apocalyptic number.

It is an amenable number.

144920040641 is a deficient number, since it is larger than the sum of its proper divisors (8524708291).

144920040641 is an equidigital number, since it uses as much as digits as its factorization.

144920040641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524708290.

The product of its (nonzero) digits is 27648, while the sum is 35.

It can be divided in two parts, 1449200 and 40641, that added together give a palindrome (1489841).

The spelling of 144920040641 in words is "one hundred forty-four billion, nine hundred twenty million, forty thousand, six hundred forty-one".