144655640131 has 4 divisors (see below), whose sum is σ = 144656430912. Its totient is φ = 144654849352.

The previous prime is 144655640099. The next prime is 144655640137. The reversal of 144655640131 is 131046556441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 131046556441 = 23 ⋅5697676367.

It is a cyclic number.

It is not a de Polignac number, because 144655640131 - 2⁵ = 144655640099 is a prime.

It is a super-2 number, since 2×144655640131² (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 (144655640137) 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, 35601 + ... + 539053.

It is an arithmetic number, because the mean of its divisors is an integer number (36164107728).

Almost surely, 2^144655640131 is an apocalyptic number.

144655640131 is a deficient number, since it is larger than the sum of its proper divisors (790781).

144655640131 is an equidigital number, since it uses as much as digits as its factorization.

144655640131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790780.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 144655640131 in words is "one hundred forty-four billion, six hundred fifty-five million, six hundred forty thousand, one hundred thirty-one".