203216156440 has 64 divisors (see below), whose sum is σ = 499994208000. Its totient is φ = 73720352640.

The previous prime is 203216156431. The next prime is 203216156447. The reversal of 203216156440 is 44651612302.

It is a junction number, because it is equal to n+sod(n) for n = 203216156396 and 203216156405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203216156447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 366780 + ... + 735499.

It is an arithmetic number, because the mean of its divisors is an integer number (7812409500).

Almost surely, 2^203216156440 is an apocalyptic number.

203216156440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203216156440 is an abundant number, since it is smaller than the sum of its proper divisors (296778051560).

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

203216156440 is a wasteful number, since it uses less digits than its factorization.

203216156440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102720 (or 1102716 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 203216156440 its reverse (44651612302), we get a palindrome (247867768742).

The spelling of 203216156440 in words is "two hundred three billion, two hundred sixteen million, one hundred fifty-six thousand, four hundred forty".