219819835452 has 72 divisors (see below), whose sum is σ = 622696165504. Its totient is φ = 59111209728.

The previous prime is 219819835393. The next prime is 219819835453. The reversal of 219819835452 is 254538918912.

It is a junction number, because it is equal to n+sod(n) for n = 219819835392 and 219819835401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219819835453) 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, 4503238 + ... + 4551789.

Almost surely, 2^219819835452 is an apocalyptic number.

It is an amenable number.

219819835452 is an abundant number, since it is smaller than the sum of its proper divisors (402876330052).

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

219819835452 is a wasteful number, since it uses less digits than its factorization.

219819835452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055075 (or 9055056 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 57.

The spelling of 219819835452 in words is "two hundred nineteen billion, eight hundred nineteen million, eight hundred thirty-five thousand, four hundred fifty-two".