40605445145 has 8 divisors (see below), whose sum is σ = 48740117256. Its totient is φ = 32475300736.

The previous prime is 40605445117. The next prime is 40605445157. The reversal of 40605445145 is 54154450604.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12866569 + 40592578576 = 3587^2 + 201476^2 .

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 40605445145 - 2¹⁸ = 40605183001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40605445099 and 40605445108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112162 + ... + 1148091.

It is an arithmetic number, because the mean of its divisors is an integer number (6092514657).

Almost surely, 2^40605445145 is an apocalyptic number.

It is an amenable number.

40605445145 is a deficient number, since it is larger than the sum of its proper divisors (8134672111).

40605445145 is a wasteful number, since it uses less digits than its factorization.

40605445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263851.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 40605445145 its reverse (54154450604), we get a palindrome (94759895749).

The spelling of 40605445145 in words is "forty billion, six hundred five million, four hundred forty-five thousand, one hundred forty-five".