2198221059816 has 64 divisors (see below), whose sum is σ = 6136854000000. Its totient is φ = 729058226688.

The previous prime is 2198221059803. The next prime is 2198221059817. The reversal of 2198221059816 is 6189501228912.

2198221059816 is a `hidden beast` number, since 2 + 1 + 9 + 8 + 22 + 10 + 598 + 16 = 666.

It is a super-3 number, since 3×2198221059816³ (a number of 38 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2198221059817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25527241 + ... + 25613208.

It is an arithmetic number, because the mean of its divisors is an integer number (95888343750).

Almost surely, 2^{2198221059816} is an apocalyptic number.

It is an amenable number.

2198221059816 is an abundant number, since it is smaller than the sum of its proper divisors (3938632940184).

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

2198221059816 is a wasteful number, since it uses less digits than its factorization.

2198221059816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51140663 (or 51140653 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 2198221059816 in words is "two trillion, one hundred ninety-eight billion, two hundred twenty-one million, fifty-nine thousand, eight hundred sixteen".