400453213310023 has 4 divisors (see below), whose sum is σ = 400453258763448. Its totient is φ = 400453167856600.

The previous prime is 400453213310011. The next prime is 400453213310053. The reversal of 400453213310023 is 320013312354004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400453213310023 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 (400453213310053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4795636 + ... + 28703737.

It is an arithmetic number, because the mean of its divisors is an integer number (100113314690862).

Almost surely, 2^{400453213310023} is an apocalyptic number.

400453213310023 is a deficient number, since it is larger than the sum of its proper divisors (45453425).

400453213310023 is a wasteful number, since it uses less digits than its factorization.

400453213310023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45453424.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 400453213310023 its reverse (320013312354004), we get a palindrome (720466525664027).

The spelling of 400453213310023 in words is "four hundred trillion, four hundred fifty-three billion, two hundred thirteen million, three hundred ten thousand, twenty-three".