144342511315021 has 4 divisors (see below), whose sum is σ = 144343753739100. Its totient is φ = 144341268890944.

The previous prime is 144342511315007. The next prime is 144342511315031. The reversal of 144342511315021 is 120513115243441.

It is a happy number.

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 55815676638121 + 88526834676900 = 7470989^2 + 9408870^2 .

It is a cyclic number.

It is not a de Polignac number, because 144342511315021 - 2¹¹ = 144342511312973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144342511315031) 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, 621037756 + ... + 621270133.

It is an arithmetic number, because the mean of its divisors is an integer number (36085938434775).

Almost surely, 2^{144342511315021} is an apocalyptic number.

It is an amenable number.

144342511315021 is a deficient number, since it is larger than the sum of its proper divisors (1242424079).

144342511315021 is a wasteful number, since it uses less digits than its factorization.

144342511315021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242424078.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 144342511315021 its reverse (120513115243441), we get a palindrome (264855626558462).

The spelling of 144342511315021 in words is "one hundred forty-four trillion, three hundred forty-two billion, five hundred eleven million, three hundred fifteen thousand, twenty-one".