21480681474080 has 48 divisors (see below), whose sum is σ = 50748426371160. Its totient is φ = 8592219021312.

The previous prime is 21480681474037. The next prime is 21480681474107. The reversal of 21480681474080 is 8047418608412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19544498279056 + 1936183195024 = 4420916^2 + 1391468^2 .

It is a super-2 number, since 2×21480681474080² (a number of 27 digits) contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 34295882 + ... + 34916598.

Almost surely, 2^{21480681474080} is an apocalyptic number.

21480681474080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21480681474080 is an abundant number, since it is smaller than the sum of its proper divisors (29267744897080).

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

21480681474080 is a wasteful number, since it uses less digits than its factorization.

21480681474080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837021 (or 837013 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 53.

The spelling of 21480681474080 in words is "twenty-one trillion, four hundred eighty billion, six hundred eighty-one million, four hundred seventy-four thousand, eighty".