40068740029 has 4 divisors (see below), whose sum is σ = 40075392060. Its totient is φ = 40062088000.

The previous prime is 40068740011. The next prime is 40068740057. The reversal of 40068740029 is 92004786004.

40068740029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38822791225 + 1245948804 = 197035^2 + 35298^2 .

It is a cyclic number.

It is not a de Polignac number, because 40068740029 - 2⁷ = 40068739901 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40068739973 and 40068740000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40068741029) 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, 3316972 + ... + 3329029.

It is an arithmetic number, because the mean of its divisors is an integer number (10018848015).

Almost surely, 2^40068740029 is an apocalyptic number.

It is an amenable number.

40068740029 is a deficient number, since it is larger than the sum of its proper divisors (6652031).

40068740029 is an equidigital number, since it uses as much as digits as its factorization.

40068740029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652030.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 40068740029 in words is "forty billion, sixty-eight million, seven hundred forty thousand, twenty-nine".