21552442362 has 32 divisors (see below), whose sum is σ = 52248346560. Its totient is φ = 6531042960.

The previous prime is 21552442333. The next prime is 21552442363. The reversal of 21552442362 is 26324425512.

21552442362 is a `hidden beast` number, since 2 + 1 + 55 + 244 + 2 + 362 = 666.

It is not an unprimeable number, because it can be changed into a prime (21552442363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18141193 + ... + 18142380.

It is an arithmetic number, because the mean of its divisors is an integer number (1632760830).

Almost surely, 2^21552442362 is an apocalyptic number.

21552442362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21552442362 is an abundant number, since it is smaller than the sum of its proper divisors (30695904198).

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

21552442362 is a wasteful number, since it uses less digits than its factorization.

21552442362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36283595 (or 36283589 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 21552442362 its reverse (26324425512), we get a palindrome (47876867874).

The spelling of 21552442362 in words is "twenty-one billion, five hundred fifty-two million, four hundred forty-two thousand, three hundred sixty-two".