40838162665 has 8 divisors (see below), whose sum is σ = 49012970760. Its totient is φ = 32665746432.

The previous prime is 40838162633. The next prime is 40838162669. The reversal of 40838162665 is 56626183804.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4291429081 + 36546733584 = 65509^2 + 191172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40838162665 - 2⁵ = 40838162633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40838162669) 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, 560184 + ... + 628873.

It is an arithmetic number, because the mean of its divisors is an integer number (6126621345).

Almost surely, 2^40838162665 is an apocalyptic number.

It is an amenable number.

40838162665 is a deficient number, since it is larger than the sum of its proper divisors (8174808095).

40838162665 is a wasteful number, since it uses less digits than its factorization.

40838162665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195931.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 40838162665 in words is "forty billion, eight hundred thirty-eight million, one hundred sixty-two thousand, six hundred sixty-five".