40165140611 has 4 divisors (see below), whose sum is σ = 42279095400. Its totient is φ = 38051185824.

The previous prime is 40165140581. The next prime is 40165140643. The reversal of 40165140611 is 11604156104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40165140611 - 2¹⁰ = 40165139587 is a prime.

It is a super-2 number, since 2×40165140611² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40165140811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056977366 + ... + 1056977403.

It is an arithmetic number, because the mean of its divisors is an integer number (10569773850).

Almost surely, 2^40165140611 is an apocalyptic number.

40165140611 is a deficient number, since it is larger than the sum of its proper divisors (2113954789).

40165140611 is a wasteful number, since it uses less digits than its factorization.

40165140611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113954788.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 40165140611 its reverse (11604156104), we get a palindrome (51769296715).

The spelling of 40165140611 in words is "forty billion, one hundred sixty-five million, one hundred forty thousand, six hundred eleven".