400343420400023 has 8 divisors (see below), whose sum is σ = 402442728503760. Its totient is φ = 398248114792000.

The previous prime is 400343420399999. The next prime is 400343420400029. The reversal of 400343420400023 is 320004024343004.

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 400343420400023 - 2⁶ = 400343420399959 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 (400343420400029) 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, 1000423358 + ... + 1000823451.

It is an arithmetic number, because the mean of its divisors is an integer number (50305341062970).

Almost surely, 2^{400343420400023} is an apocalyptic number.

400343420400023 is a deficient number, since it is larger than the sum of its proper divisors (2099308103737).

400343420400023 is a wasteful number, since it uses less digits than its factorization.

400343420400023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001247857.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 400343420400023 its reverse (320004024343004), we get a palindrome (720347444743027).

The spelling of 400343420400023 in words is "four hundred trillion, three hundred forty-three billion, four hundred twenty million, four hundred thousand, twenty-three".