223635442140 has 144 divisors (see below), whose sum is σ = 751075678080. Its totient is φ = 53405447040.

The previous prime is 223635442123. The next prime is 223635442171. The reversal of 223635442140 is 41244536322.

223635442140 is a `hidden beast` number, since 2 + 2 + 3 + 635 + 4 + 4 + 2 + 14 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 223635442095 and 223635442104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 710230 + ... + 975549.

It is an arithmetic number, because the mean of its divisors is an integer number (5215803320).

Almost surely, 2^223635442140 is an apocalyptic number.

223635442140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223635442140 is an abundant number, since it is smaller than the sum of its proper divisors (527440235940).

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

223635442140 is a wasteful number, since it uses less digits than its factorization.

223635442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685872 (or 1685867 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 223635442140 its reverse (41244536322), we get a palindrome (264879978462).

The spelling of 223635442140 in words is "two hundred twenty-three billion, six hundred thirty-five million, four hundred forty-two thousand, one hundred forty".