40581126568 has 16 divisors (see below), whose sum is σ = 78713392500. Its totient is φ = 19590888576.

The previous prime is 40581126563. The next prime is 40581126571. The reversal of 40581126568 is 86562118504.

40581126568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40313411524 + 267715044 = 200782^2 + 16362^2 .

It is not an unprimeable number, because it can be changed into a prime (40581126563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87459093 + ... + 87459556.

Almost surely, 2^40581126568 is an apocalyptic number.

It is an amenable number.

40581126568 is a deficient number, since it is larger than the sum of its proper divisors (38132265932).

40581126568 is a wasteful number, since it uses less digits than its factorization.

40581126568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174918684 (or 174918680 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 40581126568 in words is "forty billion, five hundred eighty-one million, one hundred twenty-six thousand, five hundred sixty-eight".