4388165776665 has 96 divisors (see below), whose sum is σ = 8806608746880. Its totient is φ = 2070092661120.

The previous prime is 4388165776651. The next prime is 4388165776697. The reversal of 4388165776665 is 5666775618834.

It is a happy number.

It is not a de Polignac number, because 4388165776665 - 2⁴ = 4388165776649 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4388165776593 and 4388165776602.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3025819 + ... + 4234608.

It is an arithmetic number, because the mean of its divisors is an integer number (91735507780).

Almost surely, 2^{4388165776665} is an apocalyptic number.

4388165776665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4388165776665 is an abundant number, since it is smaller than the sum of its proper divisors (4418442970215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4388165776665 is a wasteful number, since it uses less digits than its factorization.

4388165776665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260500 (or 7260483 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 72.

The spelling of 4388165776665 in words is "four trillion, three hundred eighty-eight billion, one hundred sixty-five million, seven hundred seventy-six thousand, six hundred sixty-five".