40042423647 has 12 divisors (see below), whose sum is σ = 57990077184. Its totient is φ = 26625247200.

The previous prime is 40042423607. The next prime is 40042423649. The reversal of 40042423647 is 74632424004.

40042423647 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 2 + 4 + 2 + 3 + 647 = 666.

It is not a de Polignac number, because 40042423647 - 2⁸ = 40042423391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042423649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5804854 + ... + 5811747.

It is an arithmetic number, because the mean of its divisors is an integer number (4832506432).

Almost surely, 2^40042423647 is an apocalyptic number.

40042423647 is a deficient number, since it is larger than the sum of its proper divisors (17947653537).

40042423647 is a wasteful number, since it uses less digits than its factorization.

40042423647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11616990 (or 11616987 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 36.

The spelling of 40042423647 in words is "forty billion, forty-two million, four hundred twenty-three thousand, six hundred forty-seven".