21735936488898 has 64 divisors (see below), whose sum is σ = 48699907872000. Its totient is φ = 7185870806400.

The previous prime is 21735936488867. The next prime is 21735936488923. The reversal of 21735936488898 is 89888463953712.

21735936488898 is a `hidden beast` number, since 2 + 1 + 7 + 3 + 59 + 3 + 6 + 488 + 89 + 8 = 666.

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, 132348 + ... + 6594648.

It is an arithmetic number, because the mean of its divisors is an integer number (760936060500).

Almost surely, 2^{21735936488898} is an apocalyptic number.

21735936488898 is an abundant number, since it is smaller than the sum of its proper divisors (26963971383102).

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

21735936488898 is a wasteful number, since it uses less digits than its factorization.

21735936488898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6462824 (or 6462818 counting only the distinct ones).

The product of its digits is 5016453120, while the sum is 81.

The spelling of 21735936488898 in words is "twenty-one trillion, seven hundred thirty-five billion, nine hundred thirty-six million, four hundred eighty-eight thousand, eight hundred ninety-eight".