21480766330 has 64 divisors (see below), whose sum is σ = 41999132448. Its totient is φ = 7878205440.

The previous prime is 21480766319. The next prime is 21480766339. The reversal of 21480766330 is 3366708412.

It can be written as a sum of positive squares in 16 ways, for example, as 4316884209 + 17163882121 = 65703^2 + 131011^2 .

It is a super-2 number, since 2×21480766330² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21480766339) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 5943604 + ... + 5947216.

Almost surely, 2^21480766330 is an apocalyptic number.

21480766330 is a deficient number, since it is larger than the sum of its proper divisors (20518366118).

21480766330 is a wasteful number, since it uses less digits than its factorization.

21480766330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 21480766330 in words is "twenty-one billion, four hundred eighty million, seven hundred sixty-six thousand, three hundred thirty".