144100245521 has 8 divisors (see below), whose sum is σ = 146826725544. Its totient is φ = 141374047360.

The previous prime is 144100245517. The next prime is 144100245637. The reversal of 144100245521 is 125542001441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54364051921 + 89736193600 = 233161^2 + 299560^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144100245521 - 2² = 144100245517 is a prime.

It is a super-2 number, since 2×144100245521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144105245521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164395 + ... + 1282191.

It is an arithmetic number, because the mean of its divisors is an integer number (18353340693).

Almost surely, 2^144100245521 is an apocalyptic number.

It is an amenable number.

144100245521 is a deficient number, since it is larger than the sum of its proper divisors (2726480023).

144100245521 is a wasteful number, since it uses less digits than its factorization.

144100245521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140931.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 144100245521 its reverse (125542001441), we get a palindrome (269642246962).

The spelling of 144100245521 in words is "one hundred forty-four billion, one hundred million, two hundred forty-five thousand, five hundred twenty-one".