40544051165 has 4 divisors (see below), whose sum is σ = 48652861404. Its totient is φ = 32435240928.

The previous prime is 40544051143. The next prime is 40544051167. The reversal of 40544051165 is 56115044504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23139581689 + 17404469476 = 152117^2 + 131926^2 .

It is a cyclic number.

It is not a de Polignac number, because 40544051165 - 2¹⁴ = 40544034781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40544051167) 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, 4054405112 + ... + 4054405121.

It is an arithmetic number, because the mean of its divisors is an integer number (12163215351).

Almost surely, 2^40544051165 is an apocalyptic number.

It is an amenable number.

40544051165 is a deficient number, since it is larger than the sum of its proper divisors (8108810239).

40544051165 is an equidigital number, since it uses as much as digits as its factorization.

40544051165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8108810238.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 40544051165 its reverse (56115044504), we get a palindrome (96659095669).

The spelling of 40544051165 in words is "forty billion, five hundred forty-four million, fifty-one thousand, one hundred sixty-five".