40510380817 has 4 divisors (see below), whose sum is σ = 40513915876. Its totient is φ = 40506845760.

The previous prime is 40510380767. The next prime is 40510380839. The reversal of 40510380817 is 71808301504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9154471041 + 31355909776 = 95679^2 + 177076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40510380817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40510380857) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1750284 + ... + 1773277.

It is an arithmetic number, because the mean of its divisors is an integer number (10128478969).

Almost surely, 2^40510380817 is an apocalyptic number.

It is an amenable number.

40510380817 is a deficient number, since it is larger than the sum of its proper divisors (3535059).

40510380817 is a wasteful number, since it uses less digits than its factorization.

40510380817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535058.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 40510380817 in words is "forty billion, five hundred ten million, three hundred eighty thousand, eight hundred seventeen".