40345540221 has 8 divisors (see below), whose sum is σ = 61478918464. Its totient is φ = 23054594400.

The previous prime is 40345540217. The next prime is 40345540223. The reversal of 40345540221 is 12204554304.

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

It is not a de Polignac number, because 40345540221 - 2² = 40345540217 is a prime.

It is a super-3 number, since 3×40345540221³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40345540223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960608080 + ... + 960608121.

It is an arithmetic number, because the mean of its divisors is an integer number (7684864808).

Almost surely, 2^40345540221 is an apocalyptic number.

It is an amenable number.

40345540221 is a deficient number, since it is larger than the sum of its proper divisors (21133378243).

40345540221 is a wasteful number, since it uses less digits than its factorization.

40345540221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921216211.

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 40345540221 in words is "forty billion, three hundred forty-five million, five hundred forty thousand, two hundred twenty-one".