21412198132836 has 144 divisors (see below), whose sum is σ = 58600724616000. Its totient is φ = 6067132495872.

The previous prime is 21412198132823. The next prime is 21412198132841. The reversal of 21412198132836 is 63823189121412.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81956140 + ... + 82216988.

It is an arithmetic number, because the mean of its divisors is an integer number (406949476500).

Almost surely, 2^{21412198132836} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21412198132836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29300362308000).

21412198132836 is an abundant number, since it is smaller than the sum of its proper divisors (37188526483164).

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

21412198132836 is a wasteful number, since it uses less digits than its factorization.

21412198132836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262026 (or 262017 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The spelling of 21412198132836 in words is "twenty-one trillion, four hundred twelve billion, one hundred ninety-eight million, one hundred thirty-two thousand, eight hundred thirty-six".