21636111367098 has 48 divisors (see below), whose sum is σ = 50059078617600. Its totient is φ = 6738722111520.

The previous prime is 21636111367097. The next prime is 21636111367163. The reversal of 21636111367098 is 89076311163612.

21636111367098 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 611 + 13 + 6 + 7 + 0 + 9 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (21636111367093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668507838 + ... + 668540201.

It is an arithmetic number, because the mean of its divisors is an integer number (1042897471200).

Almost surely, 2^{21636111367098} is an apocalyptic number.

21636111367098 is an abundant number, since it is smaller than the sum of its proper divisors (28422967250502).

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

21636111367098 is a wasteful number, since it uses less digits than its factorization.

21636111367098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337048107 (or 1337048104 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 21636111367098 in words is "twenty-one trillion, six hundred thirty-six billion, one hundred eleven million, three hundred sixty-seven thousand, ninety-eight".