40654403999 has 16 divisors (see below), whose sum is σ = 44882740896. Its totient is φ = 36516096000.

The previous prime is 40654403981. The next prime is 40654404013. The reversal of 40654403999 is 99930445604.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40654403999 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40654403999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40654403099) 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, 609569 + ... + 672965.

It is an arithmetic number, because the mean of its divisors is an integer number (2805171306).

Almost surely, 2^40654403999 is an apocalyptic number.

40654403999 is a deficient number, since it is larger than the sum of its proper divisors (4228336897).

40654403999 is a wasteful number, since it uses less digits than its factorization.

40654403999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64106.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 40654403999 in words is "forty billion, six hundred fifty-four million, four hundred three thousand, nine hundred ninety-nine".