21303574472 has 8 divisors (see below), whose sum is σ = 39944202150. Its totient is φ = 10651787232.

The previous prime is 21303574417. The next prime is 21303574517. The reversal of 21303574472 is 27447530312.

It can be written as a sum of positive squares in only one way, i.e., 11803953316 + 9499621156 = 108646^2 + 97466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331473397 + ... + 1331473412.

Almost surely, 2^21303574472 is an apocalyptic number.

It is an amenable number.

21303574472 is a deficient number, since it is larger than the sum of its proper divisors (18640627678).

21303574472 is a wasteful number, since it uses less digits than its factorization.

21303574472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662946815 (or 2662946811 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 38.

The spelling of 21303574472 in words is "twenty-one billion, three hundred three million, five hundred seventy-four thousand, four hundred seventy-two".