21550524423074 has 32 divisors (see below), whose sum is σ = 32492624394240. Its totient is φ = 10719806766592.

The previous prime is 21550524423053. The next prime is 21550524423083. The reversal of 21550524423074 is 47032442505512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1194124319 + ... + 1194142365.

It is an arithmetic number, because the mean of its divisors is an integer number (1015394512320).

Almost surely, 2^{21550524423074} is an apocalyptic number.

21550524423074 is a deficient number, since it is larger than the sum of its proper divisors (10942099971166).

21550524423074 is a wasteful number, since it uses less digits than its factorization.

21550524423074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234.

The product of its (nonzero) digits is 1344000, while the sum is 44.

Adding to 21550524423074 its reverse (47032442505512), we get a palindrome (68582966928586).

The spelling of 21550524423074 in words is "twenty-one trillion, five hundred fifty billion, five hundred twenty-four million, four hundred twenty-three thousand, seventy-four".