144631865354 has 4 divisors (see below), whose sum is σ = 216947798034. Its totient is φ = 72315932676.

The previous prime is 144631865353. The next prime is 144631865359. The reversal of 144631865354 is 453568136441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 453568136441 = 7 ⋅64795448063.

It can be written as a sum of positive squares in only one way, i.e., 99617878129 + 45013987225 = 315623^2 + 212165^2 .

It is not an unprimeable number, because it can be changed into a prime (144631865353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36157966337 + ... + 36157966340.

Almost surely, 2^144631865354 is an apocalyptic number.

144631865354 is a deficient number, since it is larger than the sum of its proper divisors (72315932680).

144631865354 is an equidigital number, since it uses as much as digits as its factorization.

144631865354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72315932679.

The product of its digits is 4147200, while the sum is 50.

The spelling of 144631865354 in words is "one hundred forty-four billion, six hundred thirty-one million, eight hundred sixty-five thousand, three hundred fifty-four".