40913678321 has 4 divisors (see below), whose sum is σ = 40914256500. Its totient is φ = 40913100144.

The previous prime is 40913678279. The next prime is 40913678341. The reversal of 40913678321 is 12387631904.

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 22406796721 + 18506881600 = 149689^2 + 136040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40913678321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40913678341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165266 + ... + 330363.

It is an arithmetic number, because the mean of its divisors is an integer number (10228564125).

Almost surely, 2^40913678321 is an apocalyptic number.

It is an amenable number.

40913678321 is a deficient number, since it is larger than the sum of its proper divisors (578179).

40913678321 is an equidigital number, since it uses as much as digits as its factorization.

40913678321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578178.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 40913678321 in words is "forty billion, nine hundred thirteen million, six hundred seventy-eight thousand, three hundred twenty-one".