42444034340665 has 8 divisors (see below), whose sum is σ = 51144180800328. Its totient is φ = 33814334411520.

The previous prime is 42444034340651. The next prime is 42444034340737. The reversal of 42444034340665 is 56604343044424.

It can be written as a sum of positive squares in 4 ways, for example, as 8669897691961 + 33774136648704 = 2944469^2 + 5811552^2 .

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

It is not a de Polignac number, because 42444034340665 - 2¹⁵ = 42444034307897 is a prime.

It is a super-2 number, since 2×42444034340665² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17611631302 + ... + 17611633711.

It is an arithmetic number, because the mean of its divisors is an integer number (6393022600041).

Almost surely, 2^{42444034340665} is an apocalyptic number.

It is an amenable number.

42444034340665 is a deficient number, since it is larger than the sum of its proper divisors (8700146459663).

42444034340665 is a wasteful number, since it uses less digits than its factorization.

42444034340665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35223265259.

The product of its (nonzero) digits is 13271040, while the sum is 49.

The spelling of 42444034340665 in words is "forty-two trillion, four hundred forty-four billion, thirty-four million, three hundred forty thousand, six hundred sixty-five".