3120402342665 has 8 divisors (see below), whose sum is σ = 3805867775688. Its totient is φ = 2455398564480.

The previous prime is 3120402342583. The next prime is 3120402342667. The reversal of 3120402342665 is 5662432040213.

It can be written as a sum of positive squares in 4 ways, for example, as 368482992784 + 2751919349881 = 607028^2 + 1658891^2 .

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

It is not a de Polignac number, because 3120402342665 - 2³⁰ = 3119328600841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3120402342667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5115413372 + ... + 5115413981.

It is an arithmetic number, because the mean of its divisors is an integer number (475733471961).

Almost surely, 2^{3120402342665} is an apocalyptic number.

It is an amenable number.

3120402342665 is a deficient number, since it is larger than the sum of its proper divisors (685465433023).

3120402342665 is a wasteful number, since it uses less digits than its factorization.

3120402342665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10230827419.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 3120402342665 its reverse (5662432040213), we get a palindrome (8782834382878).

The spelling of 3120402342665 in words is "three trillion, one hundred twenty billion, four hundred two million, three hundred forty-two thousand, six hundred sixty-five".