423423400443 has 16 divisors (see below), whose sum is σ = 565750596096. Its totient is φ = 281689500960.

The previous prime is 423423400427. The next prime is 423423400447. The reversal of 423423400443 is 344004324324.

It is not a de Polignac number, because 423423400443 - 2⁴ = 423423400427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423423400447) 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, 6855646 + ... + 6917132.

It is an arithmetic number, because the mean of its divisors is an integer number (35359412256).

Almost surely, 2^423423400443 is an apocalyptic number.

423423400443 is a deficient number, since it is larger than the sum of its proper divisors (142327195653).

423423400443 is a wasteful number, since it uses less digits than its factorization.

423423400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66274.

The product of its (nonzero) digits is 110592, while the sum is 33.

Adding to 423423400443 its reverse (344004324324), we get a palindrome (767427724767).

The spelling of 423423400443 in words is "four hundred twenty-three billion, four hundred twenty-three million, four hundred thousand, four hundred forty-three".