40451023211 has 4 divisors (see below), whose sum is σ = 40457494392. Its totient is φ = 40444552032.

The previous prime is 40451023169. The next prime is 40451023213. The reversal of 40451023211 is 11232015404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40451023211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40451023213) 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 3 ways as a sum of consecutive naturals, for example, 3226205 + ... + 3238718.

It is an arithmetic number, because the mean of its divisors is an integer number (10114373598).

Almost surely, 2^40451023211 is an apocalyptic number.

40451023211 is a deficient number, since it is larger than the sum of its proper divisors (6471181).

40451023211 is an equidigital number, since it uses as much as digits as its factorization.

40451023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6471180.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 40451023211 its reverse (11232015404), we get a palindrome (51683038615).

The spelling of 40451023211 in words is "forty billion, four hundred fifty-one million, twenty-three thousand, two hundred eleven".