405256223101 has 16 divisors (see below), whose sum is σ = 434637895680. Its totient is φ = 376997512320.

The previous prime is 405256223087. The next prime is 405256223107. The reversal of 405256223101 is 101322652504.

It is a cyclic number.

It is not a de Polignac number, because 405256223101 - 2¹¹ = 405256221053 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 (405256223107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497885 + ... + 1747618.

It is an arithmetic number, because the mean of its divisors is an integer number (27164868480).

Almost surely, 2^405256223101 is an apocalyptic number.

It is an amenable number.

405256223101 is a deficient number, since it is larger than the sum of its proper divisors (29381672579).

405256223101 is a wasteful number, since it uses less digits than its factorization.

405256223101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245676.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 405256223101 its reverse (101322652504), we get a palindrome (506578875605).

It can be divided in two parts, 40525 and 6223101, that added together give a palindrome (6263626).

The spelling of 405256223101 in words is "four hundred five billion, two hundred fifty-six million, two hundred twenty-three thousand, one hundred one".