40818816599 has 16 divisors (see below), whose sum is σ = 45539850240. Its totient is φ = 36275460000.

The previous prime is 40818816559. The next prime is 40818816607. The reversal of 40818816599 is 99561881804.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40818816599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818816559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144767 + ... + 320304.

It is an arithmetic number, because the mean of its divisors is an integer number (2846240640).

Almost surely, 2^40818816599 is an apocalyptic number.

40818816599 is a deficient number, since it is larger than the sum of its proper divisors (4721033641).

40818816599 is a wasteful number, since it uses less digits than its factorization.

40818816599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465262.

The product of its (nonzero) digits is 4976640, while the sum is 59.

The spelling of 40818816599 in words is "forty billion, eight hundred eighteen million, eight hundred sixteen thousand, five hundred ninety-nine".