40820074965 has 12 divisors (see below), whose sum is σ = 70754796684. Its totient is φ = 21770706624.

The previous prime is 40820074927. The next prime is 40820074969. The reversal of 40820074965 is 56947002804.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6493619889 + 34326455076 = 80583^2 + 185274^2 .

It is not a de Polignac number, because 40820074965 - 2⁶ = 40820074901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 907112777 = 40820074965 / (4 + 0 + 8 + 2 + 0 + 0 + 7 + 4 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 40820074965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40820074969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453556344 + ... + 453556433.

It is an arithmetic number, because the mean of its divisors is an integer number (5896233057).

Almost surely, 2^40820074965 is an apocalyptic number.

40820074965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40820074965 is a deficient number, since it is larger than the sum of its proper divisors (29934721719).

40820074965 is a wasteful number, since it uses less digits than its factorization.

40820074965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907112788 (or 907112785 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 40820074965 in words is "forty billion, eight hundred twenty million, seventy-four thousand, nine hundred sixty-five".