23421445453550 has 48 divisors (see below), whose sum is σ = 45888727955760. Its totient is φ = 8869300957440.

The previous prime is 23421445453541. The next prime is 23421445453573. The reversal of 23421445453550 is 5535454412432.

It is a junction number, because it is equal to n+sod(n) for n = 23421445453495 and 23421445453504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7240937 + ... + 9963636.

It is an arithmetic number, because the mean of its divisors is an integer number (956015165745).

Almost surely, 2^{23421445453550} is an apocalyptic number.

23421445453550 is a deficient number, since it is larger than the sum of its proper divisors (22467282502210).

23421445453550 is a wasteful number, since it uses less digits than its factorization.

23421445453550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17206037 (or 17206032 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 47.

Adding to 23421445453550 its reverse (5535454412432), we get a palindrome (28956899865982).

The spelling of 23421445453550 in words is "twenty-three trillion, four hundred twenty-one billion, four hundred forty-five million, four hundred fifty-three thousand, five hundred fifty".