423545002000 has 80 divisors (see below), whose sum is σ = 1057168479744. Its totient is φ = 163952880000.

The previous prime is 423545001991. The next prime is 423545002003. The reversal of 423545002000 is 200545324.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (423545002003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3353686 + ... + 3477685.

Almost surely, 2^423545002000 is an apocalyptic number.

423545002000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423545002000 is an abundant number, since it is smaller than the sum of its proper divisors (633623477744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423545002000 is a wasteful number, since it uses less digits than its factorization.

423545002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6831425 (or 6831409 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 423545002000 its reverse (200545324), we get a palindrome (423745547324).

The spelling of 423545002000 in words is "four hundred twenty-three billion, five hundred forty-five million, two thousand".