40381530745 has 8 divisors (see below), whose sum is σ = 48523950216. Its totient is φ = 32261149056.

The previous prime is 40381530701. The next prime is 40381530793. The reversal of 40381530745 is 54703518304.

It can be written as a sum of positive squares in 4 ways, for example, as 18756945936 + 21624584809 = 136956^2 + 147053^2 .

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 40381530745 - 2³¹ = 38234047097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40381530698 and 40381530707.

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 7 ways as a sum of consecutive naturals, for example, 5505412 + ... + 5512741.

It is an arithmetic number, because the mean of its divisors is an integer number (6065493777).

Almost surely, 2^40381530745 is an apocalyptic number.

It is an amenable number.

40381530745 is a deficient number, since it is larger than the sum of its proper divisors (8142419471).

40381530745 is a wasteful number, since it uses less digits than its factorization.

40381530745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018891.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 40381530745 in words is "forty billion, three hundred eighty-one million, five hundred thirty thousand, seven hundred forty-five".