21104357362 has 48 divisors (see below), whose sum is σ = 36794318400. Its totient is φ = 9001785600.

The previous prime is 21104357359. The next prime is 21104357363. The reversal of 21104357362 is 26375340112.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (21104357363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2214187 + ... + 2223697.

It is an arithmetic number, because the mean of its divisors is an integer number (766548300).

Almost surely, 2^21104357362 is an apocalyptic number.

21104357362 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21104357362 is a deficient number, since it is larger than the sum of its proper divisors (15689961038).

21104357362 is a wasteful number, since it uses less digits than its factorization.

21104357362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907 (or 9890 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 21104357362 its reverse (26375340112), we get a palindrome (47479697474).

The spelling of 21104357362 in words is "twenty-one billion, one hundred four million, three hundred fifty-seven thousand, three hundred sixty-two".