40068739731 has 8 divisors (see below), whose sum is σ = 53426168784. Its totient is φ = 26711901920.

The previous prime is 40068739729. The next prime is 40068739757. The reversal of 40068739731 is 13793786004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40068739731 - 2¹ = 40068739729 is a prime.

It is a super-2 number, since 2×40068739731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40068739631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47005 + ... + 286961.

It is an arithmetic number, because the mean of its divisors is an integer number (6678271098).

Almost surely, 2^40068739731 is an apocalyptic number.

40068739731 is a deficient number, since it is larger than the sum of its proper divisors (13357429053).

40068739731 is a wasteful number, since it uses less digits than its factorization.

40068739731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295621.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 40068739731 in words is "forty billion, sixty-eight million, seven hundred thirty-nine thousand, seven hundred thirty-one".