40505551321 has 8 divisors (see below), whose sum is σ = 43724134080. Its totient is φ = 37408424592.

The previous prime is 40505551319. The next prime is 40505551343. The reversal of 40505551321 is 12315550504.

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 40505551321 - 2¹ = 40505551319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40505551301) 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 7 ways as a sum of consecutive naturals, for example, 30363315 + ... + 30364648.

It is an arithmetic number, because the mean of its divisors is an integer number (5465516760).

Almost surely, 2^40505551321 is an apocalyptic number.

It is an amenable number.

40505551321 is a deficient number, since it is larger than the sum of its proper divisors (3218582759).

40505551321 is a wasteful number, since it uses less digits than its factorization.

40505551321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60728015.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 40505551321 in words is "forty billion, five hundred five million, five hundred fifty-one thousand, three hundred twenty-one".