40555789893 has 6 divisors (see below), whose sum is σ = 58580585414. Its totient is φ = 27037193256.

The previous prime is 40555789889. The next prime is 40555789931. The reversal of 40555789893 is 39898755504.

40555789893 is a `hidden beast` number, since 4 + 0 + 55 + 578 + 9 + 8 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35918588484 + 4637201409 = 189522^2 + 68097^2 .

It is not a de Polignac number, because 40555789893 - 2² = 40555789889 is a prime.

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 40555789893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40555789823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2253099430 + ... + 2253099447.

Almost surely, 2^40555789893 is an apocalyptic number.

It is an amenable number.

40555789893 is a deficient number, since it is larger than the sum of its proper divisors (18024795521).

40555789893 is a wasteful number, since it uses less digits than its factorization.

40555789893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506198883 (or 4506198880 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 63.

The spelling of 40555789893 in words is "forty billion, five hundred fifty-five million, seven hundred eighty-nine thousand, eight hundred ninety-three".