40255435541221 has 8 divisors (see below), whose sum is σ = 40262834571264. Its totient is φ = 40248037212240.

The previous prime is 40255435541213. The next prime is 40255435541249. The reversal of 40255435541221 is 12214553455204.

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 40255435541221 - 2³ = 40255435541213 is a prime.

It is a super-2 number, since 2×40255435541221² (a number of 28 digits) contains 22 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 (40255435541281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122426391 + ... + 122754763.

It is an arithmetic number, because the mean of its divisors is an integer number (5032854321408).

Almost surely, 2^{40255435541221} is an apocalyptic number.

It is an amenable number.

40255435541221 is a deficient number, since it is larger than the sum of its proper divisors (7399030043).

40255435541221 is a wasteful number, since it uses less digits than its factorization.

40255435541221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350531.

The product of its (nonzero) digits is 960000, while the sum is 43.

Adding to 40255435541221 its reverse (12214553455204), we get a palindrome (52469988996425).

The spelling of 40255435541221 in words is "forty trillion, two hundred fifty-five billion, four hundred thirty-five million, five hundred forty-one thousand, two hundred twenty-one".