144641063531 has 4 divisors (see below), whose sum is σ = 144704477064. Its totient is φ = 144577650000.

The previous prime is 144641063473. The next prime is 144641063629. The reversal of 144641063531 is 135360146441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144641063531 is a prime.

It is a super-2 number, since 2×144641063531² (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 (144641063731) 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, 31703345 + ... + 31707906.

It is an arithmetic number, because the mean of its divisors is an integer number (36176119266).

Almost surely, 2^144641063531 is an apocalyptic number.

144641063531 is a deficient number, since it is larger than the sum of its proper divisors (63413533).

144641063531 is an equidigital number, since it uses as much as digits as its factorization.

144641063531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63413532.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 144641063531 in words is "one hundred forty-four billion, six hundred forty-one million, sixty-three thousand, five hundred thirty-one".