21203276704 has 12 divisors (see below), whose sum is σ = 41743951074. Its totient is φ = 10601638336.

The previous prime is 21203276683. The next prime is 21203276711. The reversal of 21203276704 is 40767230212.

It can be written as a sum of positive squares in only one way, i.e., 10870147600 + 10333129104 = 104260^2 + 101652^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21203276704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331301167 + ... + 331301230.

Almost surely, 2^21203276704 is an apocalyptic number.

It is an amenable number.

21203276704 is a deficient number, since it is larger than the sum of its proper divisors (20540674370).

21203276704 is an equidigital number, since it uses as much as digits as its factorization.

21203276704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662602407 (or 662602399 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 21203276704 in words is "twenty-one billion, two hundred three million, two hundred seventy-six thousand, seven hundred four".