219935398368 has 96 divisors (see below), whose sum is σ = 659961679104. Its totient is φ = 62823877632.

The previous prime is 219935398321. The next prime is 219935398379. The reversal of 219935398368 is 863893539912.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 219935398299 and 219935398308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2992396 + ... + 3065012.

It is an arithmetic number, because the mean of its divisors is an integer number (6874600824).

Almost surely, 2^219935398368 is an apocalyptic number.

219935398368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

219935398368 is an abundant number, since it is smaller than the sum of its proper divisors (440026280736).

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

219935398368 is a wasteful number, since it uses less digits than its factorization.

219935398368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77144 (or 77136 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 66.

The spelling of 219935398368 in words is "two hundred nineteen billion, nine hundred thirty-five million, three hundred ninety-eight thousand, three hundred sixty-eight".