40334656421 has 8 divisors (see below), whose sum is σ = 40526848344. Its totient is φ = 40142868480.

The previous prime is 40334656393. The next prime is 40334656423. The reversal of 40334656421 is 12465643304.

It can be written as a sum of positive squares in 4 ways, for example, as 104325796 + 40230330625 = 10214^2 + 200575^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40334656421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40334656423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100115 + ... + 301151.

It is an arithmetic number, because the mean of its divisors is an integer number (5065856043).

Almost surely, 2^40334656421 is an apocalyptic number.

It is an amenable number.

40334656421 is a deficient number, since it is larger than the sum of its proper divisors (192191923).

40334656421 is a wasteful number, since it uses less digits than its factorization.

40334656421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201991.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 40334656421 in words is "forty billion, three hundred thirty-four million, six hundred fifty-six thousand, four hundred twenty-one".