40442760785 has 12 divisors (see below), whose sum is σ = 56454792948. Its totient is φ = 27732178656.

The previous prime is 40442760767. The next prime is 40442760791. The reversal of 40442760785 is 58706724404.

It can be written as a sum of positive squares in 2 ways, for example, as 29323480081 + 11119280704 = 171241^2 + 105448^2 .

It is not a de Polignac number, because 40442760785 - 2¹⁴ = 40442744401 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 82536002 + ... + 82536491.

It is an arithmetic number, because the mean of its divisors is an integer number (4704566079).

Almost surely, 2^40442760785 is an apocalyptic number.

It is an amenable number.

40442760785 is a deficient number, since it is larger than the sum of its proper divisors (16012032163).

40442760785 is a wasteful number, since it uses less digits than its factorization.

40442760785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165072512 (or 165072505 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 47.

The spelling of 40442760785 in words is "forty billion, four hundred forty-two million, seven hundred sixty thousand, seven hundred eighty-five".