144435865858 has 8 divisors (see below), whose sum is σ = 216660603852. Its totient is φ = 72215664576.

The previous prime is 144435865807. The next prime is 144435865921. The reversal of 144435865858 is 858568534441.

It can be written as a sum of positive squares in 2 ways, for example, as 143411417809 + 1024448049 = 378697^2 + 32007^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 144435865796 and 144435865805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053435 + ... + 1182622.

Almost surely, 2^144435865858 is an apocalyptic number.

144435865858 is a deficient number, since it is larger than the sum of its proper divisors (72224737994).

144435865858 is a wasteful number, since it uses less digits than its factorization.

144435865858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268356.

The product of its digits is 73728000, while the sum is 61.

The spelling of 144435865858 in words is "one hundred forty-four billion, four hundred thirty-five million, eight hundred sixty-five thousand, eight hundred fifty-eight".