40094557817 has 8 divisors (see below), whose sum is σ = 42522326856. Its totient is φ = 37674484992.

The previous prime is 40094557781. The next prime is 40094557831. The reversal of 40094557817 is 71875549004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 736362496 + 39358195321 = 27136^2 + 198389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40094557817 - 2¹⁴ = 40094541433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40094557117) 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 7 ways as a sum of consecutive naturals, for example, 1913318 + ... + 1934159.

It is an arithmetic number, because the mean of its divisors is an integer number (5315290857).

Almost surely, 2^40094557817 is an apocalyptic number.

It is an amenable number.

40094557817 is a deficient number, since it is larger than the sum of its proper divisors (2427769039).

40094557817 is a wasteful number, since it uses less digits than its factorization.

40094557817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848107.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 40094557817 in words is "forty billion, ninety-four million, five hundred fifty-seven thousand, eight hundred seventeen".