4145380979665 has 8 divisors (see below), whose sum is σ = 4974471405288. Its totient is φ = 3316295297280.

The previous prime is 4145380979653. The next prime is 4145380979669. The reversal of 4145380979665 is 5669790835414.

It can be written as a sum of positive squares in 4 ways, for example, as 441145699344 + 3704235280321 = 664188^2 + 1924639^2 .

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

It is not a de Polignac number, because 4145380979665 - 2⁵ = 4145380979633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4145380979665.

It is not an unprimeable number, because it can be changed into a prime (4145380979669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158079 + ... + 3103531.

It is an arithmetic number, because the mean of its divisors is an integer number (621808925661).

Almost surely, 2^{4145380979665} is an apocalyptic number.

It is an amenable number.

4145380979665 is a deficient number, since it is larger than the sum of its proper divisors (829090425623).

4145380979665 is a wasteful number, since it uses less digits than its factorization.

4145380979665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371619.

The product of its (nonzero) digits is 195955200, while the sum is 67.

The spelling of 4145380979665 in words is "four trillion, one hundred forty-five billion, three hundred eighty million, nine hundred seventy-nine thousand, six hundred sixty-five".