423554440000 has 140 divisors (see below), whose sum is σ = 1058307833088. Its totient is φ = 168126400000.

The previous prime is 423554439991. The next prime is 423554440009. The reversal of 423554440000 is 44455324.

It is an interprime number because it is at equal distance from previous prime (423554439991) and next prime (423554440009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423554440009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5199585 + ... + 5280415.

Almost surely, 2^423554440000 is an apocalyptic number.

423554440000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423554440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529153916544).

423554440000 is an abundant number, since it is smaller than the sum of its proper divisors (634753393088).

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

423554440000 is an equidigital number, since it uses as much as digits as its factorization.

423554440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80994 (or 80969 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 423554440000 its reverse (44455324), we get a palindrome (423598895324).

The spelling of 423554440000 in words is "four hundred twenty-three billion, five hundred fifty-four million, four hundred forty thousand".