21482111385378 has 64 divisors (see below), whose sum is σ = 54843386019840. Its totient is φ = 6105611293200.

The previous prime is 21482111385281. The next prime is 21482111385421. The reversal of 21482111385378 is 87358311128412.

21482111385378 is a `hidden beast` number, since 2 + 1 + 4 + 82 + 1 + 113 + 85 + 378 = 666.

It is a super-2 number, since 2×21482111385378² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 148700008 + ... + 148844403.

It is an arithmetic number, because the mean of its divisors is an integer number (856927906560).

Almost surely, 2^{21482111385378} is an apocalyptic number.

21482111385378 is an abundant number, since it is smaller than the sum of its proper divisors (33361274634462).

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

21482111385378 is a wasteful number, since it uses less digits than its factorization.

21482111385378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297544620 (or 297544614 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 21482111385378 in words is "twenty-one trillion, four hundred eighty-two billion, one hundred eleven million, three hundred eighty-five thousand, three hundred seventy-eight".