21181818482 has 8 divisors (see below), whose sum is σ = 34661157552. Its totient is φ = 9628099300.

The previous prime is 21181818419. The next prime is 21181818487. The reversal of 21181818482 is 28481818112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21181818487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481404944 + ... + 481404987.

It is an arithmetic number, because the mean of its divisors is an integer number (4332644694).

Almost surely, 2^21181818482 is an apocalyptic number.

21181818482 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21181818482 is a deficient number, since it is larger than the sum of its proper divisors (13479339070).

21181818482 is a wasteful number, since it uses less digits than its factorization.

21181818482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962809944.

The product of its digits is 65536, while the sum is 44.

The spelling of 21181818482 in words is "twenty-one billion, one hundred eighty-one million, eight hundred eighteen thousand, four hundred eighty-two".