21733145603156 has 24 divisors (see below), whose sum is σ = 40965042037920. Its totient is φ = 10029109979232.

The previous prime is 21733145603131. The next prime is 21733145603161. The reversal of 21733145603156 is 65130654133712.

It is a self number, because there is not a number n which added to its sum of digits gives 21733145603156.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32427746 + ... + 33091161.

It is an arithmetic number, because the mean of its divisors is an integer number (1706876751580).

Almost surely, 2^{21733145603156} is an apocalyptic number.

21733145603156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21733145603156 is a deficient number, since it is larger than the sum of its proper divisors (19231896434764).

21733145603156 is a wasteful number, since it uses less digits than its factorization.

21733145603156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65525303 (or 65525301 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

Adding to 21733145603156 its reverse (65130654133712), we get a palindrome (86863799736868).

The spelling of 21733145603156 in words is "twenty-one trillion, seven hundred thirty-three billion, one hundred forty-five million, six hundred three thousand, one hundred fifty-six".