144121664531 has 16 divisors (see below), whose sum is σ = 158838505056. Its totient is φ = 129924297216.

The previous prime is 144121664527. The next prime is 144121664569. The reversal of 144121664531 is 135466121441.

It is a cyclic number.

It is not a de Polignac number, because 144121664531 - 2² = 144121664527 is a prime.

It is a super-2 number, since 2×144121664531² (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 (144121664581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6256571 + ... + 6279563.

It is an arithmetic number, because the mean of its divisors is an integer number (9927406566).

Almost surely, 2^144121664531 is an apocalyptic number.

144121664531 is a deficient number, since it is larger than the sum of its proper divisors (14716840525).

144121664531 is a wasteful number, since it uses less digits than its factorization.

144121664531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34262.

The product of its digits is 69120, while the sum is 38.

Adding to 144121664531 its reverse (135466121441), we get a palindrome (279587785972).

The spelling of 144121664531 in words is "one hundred forty-four billion, one hundred twenty-one million, six hundred sixty-four thousand, five hundred thirty-one".