40261284505 has 16 divisors (see below), whose sum is σ = 52041672144. Its totient is φ = 29724721920.

The previous prime is 40261284491. The next prime is 40261284529. The reversal of 40261284505 is 50548216204.

It can be written as a sum of positive squares in 8 ways, for example, as 24486929289 + 15774355216 = 156483^2 + 125596^2 .

It is not a de Polignac number, because 40261284505 - 2¹³ = 40261276313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231435 + ... + 366175.

It is an arithmetic number, because the mean of its divisors is an integer number (3252604509).

Almost surely, 2^40261284505 is an apocalyptic number.

It is an amenable number.

40261284505 is a deficient number, since it is larger than the sum of its proper divisors (11780387639).

40261284505 is a wasteful number, since it uses less digits than its factorization.

40261284505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139356.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 40261284505 in words is "forty billion, two hundred sixty-one million, two hundred eighty-four thousand, five hundred five".