219985388676 has 135 divisors (see below), whose sum is σ = 584892835527. Its totient is φ = 72098676720.

The previous prime is 219985388671. The next prime is 219985388687. The reversal of 219985388676 is 676883589912.

The square root of 219985388676 is 469026.

It is a perfect power (a square), and thus also a powerful number.

219985388676 is a `hidden beast` number, since 2 + 1 + 9 + 9 + 8 + 538 + 86 + 7 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (219985388671) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 599415045 + ... + 599415411.

Almost surely, 2^219985388676 is an apocalyptic number.

219985388676 is the 469026-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219985388676

219985388676 is an abundant number, since it is smaller than the sum of its proper divisors (364907446851).

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

219985388676 is an frugal number, since it uses more digits than its factorization.

219985388676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 443 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 219985388676 in words is "two hundred nineteen billion, nine hundred eighty-five million, three hundred eighty-eight thousand, six hundred seventy-six".