40068678775 has 18 divisors (see below), whose sum is σ = 51339641136. Its totient is φ = 31020894000.

The previous prime is 40068678773. The next prime is 40068678779. The reversal of 40068678775 is 57787686004.

It is not a de Polignac number, because 40068678775 - 2¹ = 40068678773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40068678773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 809871 + ... + 857920.

Almost surely, 2^40068678775 is an apocalyptic number.

40068678775 is a deficient number, since it is larger than the sum of its proper divisors (11270962361).

40068678775 is a wasteful number, since it uses less digits than its factorization.

40068678775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667863 (or 1667827 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 40068678775 in words is "forty billion, sixty-eight million, six hundred seventy-eight thousand, seven hundred seventy-five".